Marcia and Tamara are running a race. Marcia has run 4 kilometers. Tamara has completed 3/4 of the race and is 2.5 kilometers ahead of Marcia. Write an equation that represents the relationship between the distances each girl has run. Let k represent the total length of the race in kilometers.

The correct answer is C. The circumference of a circle varies directly as the radius.

It is calculated by multiplying the diameter of a circle by pi, or by measuring the length of a curved line that encloses the shape.

The relationship between the circumference of a circle and its radius is a linear equation, where the circumference is equal to two times pi times the radius, or C = 2πr.

The circumference of a circle varies directly as the radius, meaning that if the radius of a circle is doubled, the circumference will also double.

This linear relationship can be used to approximate the value of pi, which is a constant ratio between the circumference and the diameter of any circle.

Therefore, the statement that justifies why the measurements of the circumference and radii of circles with different areas can be used to approximate the value of pi is that the circumference of a circle varies directly as the radius.

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The value of 5 cubic cm in liters, can be converted to be

To convert cubic centimeters (cm³) to liters (L), we can use the following conversion factor:

1 L = 1000 cm³

This means that 1 liter is equal to 1000 cubic centimeters. To convert cubic centimeters to liters, we can divide the number of cubic centimeters by 1000.

For example, to convert 5 cubic cm to liters:

5 cm³ ÷ 1000 = 0.005 L

Therefore, 5 cubic cm is equal to 0.005 liters (or 5 mL).

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Full question:

5 cubic cm to Liters

Clara's and Stefan's pizzas did not have the same ratio of pepperoni pieces to ham pieces.

For Clara,

The number of pepperoni pieces = 4

The number of ham pieces = 6

The ratio = 4:6 = 2:3

For Stefan,

The number of pepperoni piece = 6

The number of ham piece = 10

The ratio = 6:10 = 3:5

Therefore the ratio of Clara's and Stefan's pizzas is not the same.

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Answer:

To calculate the value of Hassim's Fireworks & Cycles today, we can use the formula for the present value of a growing perpetuity:

PV = FCF / (r - g)

where PV is the present value, FCF is the free cash flow, r is the weighted average cost of capital, and g is the growth rate.

Substituting the given values, we get:

PV = 129550 / (0.08 - 0.03)

PV = 2591000

Therefore, the value of Hassim's Fireworks & Cycles today is R2,591,000.

 [tex]1.[/tex] The answers are given below

   Equation: [tex]6xt +4yz -3 +10a = 1[/tex]

   Number of terms: [tex]4[/tex]

  Coefficients: [tex]6,4,10[/tex]

   Constants: [tex]-3,1[/tex]

 [tex]2.[/tex] Expression: [tex]25abc -2b +3ac -6bc +25[/tex]

    Number of terms: [tex]5[/tex]

    Coefficients: [tex]25,-2,3,-6[/tex]

    Constants: [tex]25[/tex]

  [tex]3.[/tex] Equation: [tex]25y -3xy+5x = 100[/tex]

     Number of terms: [tex]3[/tex]

     Coefficients: [tex]25,-3,5[/tex]

      Constants: [tex]100[/tex]

To break down each equation or expression and identify the number of terms, coefficients, and constants.

[tex]1.[/tex] Equation: [tex]6xt +4yz -3 +10a = 1[/tex]

   Number of terms: 4. There are four terms in this equation separated     by addition and subtraction operators.

Coefficients: [tex]6,4,10[/tex]. These are the coefficients, which are the numerical values multiplied by the variables (xt, yz, a) in each term.

 Constants: [tex]-3,1[/tex]. These are the constants, which are the numerical values without any variables that are added or subtracted in the equation.

[tex]2.[/tex]  Expression:[tex]25abc -2b +3ac -6bc +25[/tex]

   Number of terms: [tex]5[/tex] There are five terms in this expression separated by addition and subtraction operators.

  Coefficients: [tex]25,-2,3,-6[/tex]. These are the coefficients, which are the numerical values multiplied by the variables (abc, b, ac, bc) in each term.

  Constants: [tex]25[/tex]. This is the constant, which is the numerical value without any variables that is added in the expression.

[tex]3.[/tex]  Equation: [tex]25y -3xy+5x = 100[/tex]

    Number of terms:[tex]3[/tex]. There are three terms in this equation separated by addition and subtraction operators.

    Coefficients: [tex]25,-3,5[/tex]. These are the coefficients, which are the numerical values multiplied by the variables (y, xy, x) in each term.

   Constants: [tex]100[/tex]. This is the constant, which is the numerical value without any variables on the right-hand side of the equation.

Therefore,   [tex]1.[/tex] The answers are given below

   Equation: [tex]6xt +4yz -3 +10a = 1[/tex]

   Number of terms: [tex]4[/tex]

   Coefficients: [tex]6,4,10[/tex]

   Constants: [tex]-3,1[/tex]

 [tex]2.[/tex] Expression: [tex]25abc -2b +3ac -6bc +25[/tex]

    Number of terms: [tex]5[/tex]

    Coefficients: [tex]25,-2,3,-6[/tex]

    Constants: [tex]25[/tex]

  [tex]3.[/tex] Equation: [tex]25y -3xy+5x = 100[/tex]

     Number of terms: [tex]3[/tex]

     Coefficients: [tex]25,-3,5[/tex]

      Constants: [tex]100[/tex]

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Answer:

a) x < 0 excluding zero.

b) y ≥ 0

Step-by-step explanation:

a)

"x is negative": This means that x is less than zero. Negative numbers are any numbers less than zero, so this statement implies that x is a negative number. For example, x could be -1, -2, -3, and so on.

so answer is x < 0 excluding zero.

The inequality that expresses the statement "x is less than 0" using the expression "5a^2" would be:

5a^2 > 0 and x < 0

Here, the expression "5a^2 > 0" means that the value of "5a^2" is positive for any non-zero value of "a". Therefore, the expression "5a^2 > 0" is true for all non-zero values of "a". The inequality "x < 0" means that "x" is negative, or less than zero.

So, combining the two expressions, we get the inequality:

5a^2 > 0 and x < 0

b)

The statement "y is nonnegative" means that y is greater than or equal to zero. Therefore, the valid options for y are:

Therefore, the valid option for y is y ≥ 0.

As the given statement "y is nonnegative" cannot be expressed as an inequality involving the expression "5a^2". The expression "5a^2" is a polynomial in the variable "a", and it is not related to the variable "y" in the statement.

The inequality that expresses the statements "x is less than 0" and "y is non-negative" using the expression "5a^2" would be:

5a^2 > 0 and y ≥ 0 and x < 0

Here, the expression "5a^2 > 0" means that the value of "5a^2" is positive for any non-zero value of "a". Therefore, the expression "5a^2 > 0" is true for all non-zero values of "a".

The inequality "y ≥ 0" means that "y" is non-negative, or greater than or equal to zero.

The inequality "x < 0" means that "x" is negative, or less than zero.

So, combining the three expressions, we get the inequality:

5a^2 > 0 and y ≥ 0 and x < 0

I hope this helps!

Answer:its is conservative

Step-by-step explanation:

George sold 18, 22, 26, 12, 25, 20, and 19 cars per month over the past seven months.

George's first mistake was in Step 1 where he tried to find the total number of cars he needs to sell in the next month to have a mean number of sales per month of 24. To find this value, George should have multiplied the desired mean number of sales per month (24) by the total number of months (7) to get the total number of cars needed to have a mean of 24 over 7 months. However, it seems that George skipped this step and directly assumed that the total number of cars needed for a mean of 24 in the next month is simply 24.

Let's go through each step to explain

Step 1 Find the total cars needed to have a mean of 24

To find the total number of cars George needs to sell over the next 7 months to have a mean of 24 cars sold per month, he should multiply the desired mean (24) by the number of months (7)

Total cars needed = 24 * 7 = 168

Step 2  Find the total cars sold

To find the total number of cars George sold over the past 7 months, he should add up the individual sales for each month:

Total cars sold = 18 + 22 + 26 + 12 + 25 + 20 + 19 = 142

Step 3 Subtract the total cars sold from the total cars needed

To find the number of cars George needs to sell in the next month to meet his target mean of 24 cars sold per month over the past 8 months, he should subtract the total number of cars sold from the total cars needed

Cars needed in the next month = Total cars needed - Total cars sold

Cars needed in the next month = 168 - 142 = 26

Step 4 State the answer

George needs to sell 26 cars next month to have a mean of 24 cars sold per month over the past 8 months.

Therefore, George's mistake was in Step 1 where he did not correctly calculate the total number of cars he needs to sell over the next 7 months to have a mean of 24 cars sold per month.

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The standard deviation of the sampling distribution is approximately 0.3292.

The behaviour of the sampling distribution of the mean is described by the central limit theorem, a key conclusion in statistics. It asserts that regardless of how the population distribution is shaped, if a random sample of size n is taken from a population with mean and standard deviation, the distribution of sample means will tend towards a normal distribution as n increases.

Because it enables us to utilise the normal distribution to draw conclusions about the population mean based on sample means, the central limit theorem has significant practical ramifications. Additionally, it offers a foundation for confidence interval estimation and statistical hypothesis testing.

The standard deviation is given by the formula:

SD = σ/√(n)

Now, substituting the value of σ = 40, n = 147,400 we have:

SD = σ/√(n) = 40/√(147400) ≈ 0.3292

Hence, the standard deviation of the sampling distribution is approximately 0.3292.

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As a result, the sequence's tenth term is 142 as the 10th term of the arithmetic sequence with a first term of 7 and a common difference of 15.

An arithmetic progress (AP) in mathematics is a set of numbers where each term following the first is formed by adding a predetermined constant to the term before it. The mathematical progression's common difference is the name of this unchanging constant. For instance, the number progression 3, 7, 11, 15, 19,... has a common difference of 4 and is an arithmetic progression. The formula: yields the nth word of an arithmetic progression. a n = a 1 + (n - 1)d where n is the desired term's number, a n is the sequence's nth term, a 1 is its first term, d is its clear differentiation, and n is its number.

given

We can use the following formula to determine the 10th term of the arithmetic sequence with a first term of 7 and a common difference of 15:

a n = a 1 + (n - 1) * d

where a n represents the nth term in the series, a 1 represents the first term, d represents the common difference, and n is the desired term's number.

Inputting the values provided yields:

[tex]a 10 = 7 + (10 - 1) (10 - 1) * 15 \\a 10 = 7 + 9 * 15 \\a 10 = 7 + 135 \\a 10 = 142[/tex]

As a result, the sequence's tenth term is 142 as the 10th term of the arithmetic sequence with a first term of 7 and a common difference of 15.

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Answer:The amount of a 80% acid solution that must be mixed with a 55% solution to produce 600 mL of a 60% solution can be calculated using a simple algebraic equation. Let x represent the amount of the 80% acid solution in mL that needs to be mixed with the 55% solution.

The equation can be set up as follows:

0.80x + 0.55(600 - x) = 0.60(600)

Step-by-step explanation: The left-hand side of the equation represents the total amount of acid in the mixture. The first term, 0.80x, represents the amount of acid from the 80% solution, and the second term, 0.55(600 - x), represents the amount of acid from the 55% solution. The right-hand side of the equation represents the total amount of acid in the final 60% solution, which is 60% of 600 mL.

By solving this equation for x, we can determine the amount of the 80% acid solution that needs to be mixed with the 55% solution. Once we have the value of x, we can then calculate the amount of the 55% solution by subtracting x from 600 mL.

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Let x=amount of 80% solution needed

Then 600-x=amount of 30% solution needed

Now we know that the pure acid in the 80% solution (0.80x) plus the amount of pure acid in the 30% solution ((0.30)(600-x)) has to equal the amount of pure acid in the final mixture(0.40*600), so our equation to solve is:

0.80x+0.30(600-x)=0.40*600 get rid of parens

0.80x+180-0.30x=240 subtract 180 from each side

0.80x+180-180-0.30x=240-180 collect like terms

0.50x=60 divide each side by 0.50

x=120 ml---------------------amount of 80% solution needed

600-x=600-120=480 ml---------------amount of 30% solution needed

CK

120*0.80+480*0.30=0.40*600

96+144=240

240=240

The area of the triangle is 87.6 cm².

The area of the triangle can be found as follows:

Therefore,

area of a triangle = 1 / 2 bh

where

Therefore,

b = 17 cm

h = 10.3 cm

Hence,

area of a triangle = 1 / 2 × 17 × 10.3

area of a triangle = 1 / 2 × 175.1

area of a triangle = 87.55

area of a triangle = 87.6 cm²

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Answer:

f(x) = x^2

Step-by-step explanation:

A function that does not have an inverse function is called a non-invertible or many-to-one function. An example of a non-invertible function is:

f(x) = x^2

To determine if a function is invertible, we need to check if it passes the horizontal line test. If a horizontal line intersects the graph of the function at more than one point, then the function is not invertible.

For the function f(x) = x^2, if we draw a horizontal line at any value of y, it will intersect the graph of the function at two points, one on the positive x-axis and the other on the negative x-axis.

Therefore, f(x) is not invertible, as it fails the horizontal line test.

In other words, there are multiple x-values that correspond to a single y-value. For example, both x = 2 and x = -2 have the same y-value of 4. As a result, there is no unique inverse function that could map a value of 4 back to a single x-value.

In conclusion, the function f(x) = x^2 is an example of a non-invertible function, as it fails the horizontal line test and does not have a unique inverse function.

Step-by-step explanation:

Rate UP stream =  ( s - w) = 106 km / 2 hr  

                                               (  where s = boat speed       w = current speed )

                              (s-w) = 53  km/hr

Rate DOWNstream = ( s+w) = 142 / 2 = 71 kmhr

( s-w) + ( s+w) = 53  + 71   km/hr

2s = 124  

s = 62 km /hr      then   s+w = 71   shows w = 9 km/hr

According to the given information, the value of the surface integral is 8/3.

The space occupied by a two-dimensional flat surface is called the area. It is measured in square units. The area occupied by a three-dimensional object by its outer surface is called the surface area.

The surface integral of a vector field F over a surface S is given by:

∬S F ⋅ dS = ∬R (F ⋅ ru × rv) dA

where R is the parameter domain of the surface S, ru and rv are the partial derivatives of the position vector r(u,v) with respect to u and v, and dA = ||ru × rv|| dudv is the area element on the surface.

In this case, we want to evaluate the surface integral:

∫∫H 4y dA

where H is the helicoid given by the vector parametric equation:

r(u,v) = <u cos(v), u sin(v), v>, 0 ≤ u ≤ 1, 0 ≤ v ≤ 9π.

The position vector r(u,v) has partial derivatives with respect to u and v given by:

ru = <cos(v), sin(v), 0>

rv = <-u sin(v), u cos(v), 1>

The area element is given by:

dA = ||ru × rv|| dudv = ||<cos(v), sin(v), u>| dudv = u dudv

Therefore, the surface integral can be written as:

[tex]$\int\int_H 4y dA = \int_0^{9\pi} \int_0^1 4(u\sin v)u dudv$\\$= \int_0^{9\pi} \sin v \int_0^1 4u^2 du dv$[/tex]

[tex]$= \int_0^{9\pi} \sin v \left(\frac{4}{3}\right) dv$\\$= \left[-\frac{4}{3} \cos v\right]_0^{9\pi}$[/tex]

= 8/3

Hence, According to the given information the value of the surface integral is 8/3.

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The equations that will make a linear function are

A linear equation, also referred to as a linear function in mathematics, is used to identify relationships between variables that can be plotted on a straight line.

This class of polynomial functions have a degree of 1, indicating that the highest power of the variable within the formula cannot exceed 1.

It takes on the standardized form:

y = mx + b

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Answer:

12.5ft tall.

Step-by-step explanation:

The volume of a rectangular box is V = L x W x H

We are given volume, length, and width, allowing us to solve for height.

3000 ft^3 = 96 ft x 2.5 ft x H ft

Divide both sides by 96 x 2.5 to isolate H

3000 / (96 x 2.5) = H

H = 12.5 ft.

Answer:

Step-by-step explanation:

It's given that One of the first electronic computer was in the shape of a huge box. It was 96 m long and 2.5 m wide.

Length of the box = 96 feet

Breadth of the box = 2.5 feet

Also The amount of space inside was approximately 3,000 cubic feet i.e volume of the box is 3000 ft³.

We know that volume of cuboid is calculated by,

96 × 2.5 × h = 3000

240 × h = 3000

h = 3000/240

h = 12.5 feet

Therefore, Height of the computer is 12.5 feet

The constant of proportionality is 2/3

The length of the missing sides of triangle NRF are:

RF = 4.5

NR = 6

From the question, we are to calculate the constant of proportionality in the similar triangles

Constant of proportionality =

Corresponding side length on triangle GTY / Corresponding side length on triangle NRF

Constant of proportionality = GY / NF

Constant of proportionality = 6 / 9

Constant of proportionality = 2/3

We are to find the length of the missing sides of triangle NRF

By the similarity theorem, we can write that

3 / RF = 6 / 9

3 / RF = 2/3

Cross multiply

2 × RF = 3 × 3

2 × RF = 9

RF = 9/2

RF = 4.5

4 / NR= 6 / 9

4 / NR= 2/3

Cross multiply

2 × NR = 4 × 3

2 × NR = 12

NR = 12/2

NR = 6

Hence,

The length of the missing sides are

RF = 4.5

NR = 6

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according to the question, the PLUS Loan will have a higher balance due at the time of repayment by $233.80 ($11,966.11 - $11,732.31).

Divide the principal times the interest rates, the length of time, and various other factors to arrive at simple interest. Simple return = principle + interest + hours is the marketing formula. The easiest way to compute interest is with this method. The most typical technique to figure out interest is to use a portion of the principal sum. He is only going to pay his share of the 100% interest, for example, if he loans $100 form a friend then agrees to pay it off with 5% interest. $100 (0.05) corresponds to $5. Interest must be paid as you borrow money and must be added to any loans you make. Interest is often determined as a yearly proportion of the loan total. The interest on the loan is this percentage.

given,

To compare the two loans, we need to calculate the total balance due for each loan at the time of repayment. We can start by calculating the balance due for the Unsubsidized Stafford Loan:

Principal: $10,720

Interest rate: 5.95% per year, compounded monthly

Time: 6 months grace period + 6 months repayment = 1 year

Number of periods: 12 months x 1/12 month per period = 12 periods

Using the formula for compound interest, the balance due on the Unsubsidized Stafford Loan after 1 year is:

B = P(1 + r/n)^(nt) + I [(1 + r/n)^(nt) - 1]/(r/n)

where B is the balance due, P is the principal, r is the annual interest rate, n is the number of times per year the interest is compounded, t is the time in years, and I is the monthly payment.

Plugging in the numbers, we get:

B = $10,720(1 + 0.0595/12)^(121) + $0 [(1 + 0.0595/12)^(121) - 1]/(0.0595/12)

B = $11,732.31

Now, let's calculate the balance due for the PLUS Loan:

Principal: $11,443.63

Interest rate: 6.55% per year, compounded monthly

Time: 6 months repayment

Number of periods: 6 periods

Using the same formula for compound interest, the balance due on the PLUS Loan after 6 months is:

B = $11,443.63(1 + 0.0655/12)^(120.5) + $0 [(1 + 0.0655/12)^(120.5) - 1]/(0.0655/12)

B = $11,966.11

Therefore, the PLUS Loan will have a higher balance due at the time of repayment by $233.80 ($11,966.11 - $11,732.31). Thus, the Unsubsidized Stafford Loan will have a lower balance due at the time of repayment compared to the PLUS Loan.

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The area of the figure, given the vertices on the coordinate plane, is 14 square units.

The shoelace formula can be used to find the area. First, find the sum of the products :

= ( - 1 × 2 ) + ( -2 × - 3 ) + ( 4 × 2 ) + ( 4 × 4 ) + (1 × -2)

= 2 + 6 + 8 + 16 - 2

= 26

Then the products of the y coordinate and the x coordinates :

= ( -2 × - 2 ) + (2 × 4 ) + ( - 3 × 4 ) + ( 2 × 1) + ( 4 ×  -1 )

= - 2

We can then find the absolute value to be:

= | Sum 1 - Sum 2 | = | 26 - (- 2 ) | = | 26 + 2 | = 28

The area is then:

= 28 / 2

= 14 square units

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39) The balance in the account after 6 years is $4,073.62.

40) The balance in the account after 6 years is $4,134.83

What is the formula for compound interest?

[tex]A = P(1 + \frac{r}{n} )^{(nt) }[/tex]

Here P is the principal,A is the balance, r is the annual interest rate, n is the number of times the interest is compounded per year, t is the time in years.

39) Here given that P = $3500, r = 2.16% = 0.0216, n = compounded quarterly = 4 and t = 6.

So, [tex]A = 3500(1 + \frac{0.0216}{4})^{(4 \times 6)} = 4,073.62[/tex]

Therefore, the balance in the account after 6 years is $4,073.62.

40)Here given,P = $3500, r = 2.29% = 0.0229, n = 12 (compounded monthly), and t = 6.

[tex]A = 3500(1 + \frac{0.0229}{12})^{(12 \times 6)} = 4,134.83[/tex]

Therefore, the balance in the account after 6 years is $4,134.83.

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The length of the arc is 1 unit.

The distance that runs through the curved line of the circle making up the arc is known as the arc length.

length of an arc is expressed as;

l = tetha/360 ×2πr

the circumference of circle is expressed as ;

C = 2πr

6 = 2×3.14 × r

r = 6/6.28

r = 0.955 units

Therefore length of the arc

= 60/360 × 6

since 2πr is the circumference,

l = 360/360 = 1 unit

therefore the length of the arc is 1 unit.

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Answer:-by-step explanation:

the function has the x-intercept of (-2, 0)

the function has the y-intercept of (0, -8)

the function has the x-intercept of (4, 0)

The amount after 5 years with a principal of $5000 compounded quarterly at an interest rate of 2.25% annually is $5593.60 approximately.

Compound interest is a type of interest that is calculated not only on the principal amount of a loan or investment but also on any accumulated interest from previous periods. In other words, it's the interest earned on the principal amount plus any interest earned previously.

To calculate the amount after 5 years, we need to use the formula for compound interest:

A = P × {1 + r ÷ (n × 100)} ∧ (n × t)

where:

A = the final amount

P = the principal (initial amount)

r = the annual interest rate (as a decimal)

n = the number of times the interest is compounded per year

t = the number of years

In this case, P = $5000, r = 2.25% , n = 4 (since interest is compounded quarterly), and t = 5.

After applying these values, we get:

A = $5000 x (1 + 2.25/400) ⁴ ˣ ⁵

A = $5000 x (1.005625) ²⁰

A = $5000 x 1.1871955

A = $5593.60 (rounded off to 2 decimals)

Therefore, the amount after 5 years with a principal of $5000 compounded quarterly at an interest rate of 2.25% annually is $5593.60 approximately.

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The amount of space or volume inside the box but outside the basketball is 6589.44 cm³.

We have to find the volume of the box and volume of the basketball to determine the space outside it.

Box is in rectangular shape.

Volume of the box = 24 × 24 × 24

                                = 13824 cm³

Basketball is spherical in shape.

Volume of the sphere = 4/3 π r³

                                     = 4/3 π (12)³

                                     = 2304π

                                     = 7234.56 cm³

Amount of space inside the box but outside the basketball is,

13824 cm³ - 7234.56 cm³ = 6589.44 cm³

Hence the required space is 6589.44 cm³.

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