The diameter of a circle is 18 centimeters. What is the circle's circumference?

Answers

Answer 1

Answer:

Circumference ≈ 56.55

Step-by-step explanation:

Given:

Diameter = 18 cm

To Find:

The circumference of the circle

Solution:

Here we'll use the formula of finding the circumference,i.e :

[tex] \boxed{\rm \: C = πd}[/tex]

Here, d = diameterThe value of π is not given, so let us take π = 3.14C = circumference

Substitute them onto the formula:

d = 18 cmπ = 3.14

[tex]\rm C = \pi(18) \: cm[/tex]

[tex]\rm C = 3.14 \times 18 \: cm[/tex]

[tex] \boxed{\rm C \approx \: 56.55}[/tex]

Hence, the circumference of the circle is 56.55(approx).


Related Questions

18. The desired density of the shaved ice is 0.697 g/cm3, and the cost, per kilogram, of ice is $3,83. Determine
and state the cost of the ice needed to make 50 snow cones.

Answers

The cost of the ice needed to make 50 snow cones is $54.50.

What is cost of the ice?

The first step is to determine the volume of the snow cone.

Volume of the snow cone =volume of a cone + volume of the hemisphere

Volume of the cone = 1/3πr²h

1/3 x 3.14 x 10.2 x (8.3/2)² = 183.87 cm³

Volume of the hemisphere = 2/3πr³

2/3 x 3.14 x (8.3 / 2)³ = 224.43 cm³

Total volume = 224.43 cm³ + 183.87 cm³ = 408.30 cm³

Volume of 50 snow cones =  408.30 cm³ x 50 = 20,414.82

Total grams of ice needed = density x volume

0.697 x 20,414.82 = 14,229.13 grams

Convert gram to 1kg

1kg = 1000g

= 14,229.13 grams  / 1000 = 14.23kg

Cost of the ice = 14.13 x 3.83 = $54.50

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ow many decimals numbers are there whose value equals the average of their digits?

For example, 2.3 has the digits 2 and 3. Their average is 2.5 -- so that doesn’t work. But there are some that do!

There are a few rules:

Answers

Answer:

Step-by-step explanation:

there are infinite numbers between 2 and 3 having average=2.5

2.49,2.51

2.48,2.52

2.47,2.53

2.46,2.54

.................

2.491,2.509

2.492,2.508

2.493,2.507

......................

Help me please it’ll be a big help

Answers

Here’s the answer to your question. option C Is correct

Let H be the set of real numbers less than or equal to eleven

Answers

Answer:

The answer would be Set: "S" = the set of natural numbers greater than 11.

Hope this helps!

What is the equation of a line that is perpendicular to -x + 2y = 4 and passes through
the point (-2, 1)?
Oy = 2x + 3
Oy = -1/2x-3
Oy = 1/2x + 3
Oy=-2x-3

Answers

Answer:

The last option y= -2x-3

Step-by-step explanation:

this equation passes through the point (-2,1)

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
The quotient of is
.

Answers

The value of the quotient of 0.378 ÷ 0.3 is 1.26

Missing information in the question

The quotient of 0.378 ÷ 0.3 is

How to determine the quotient?

The expression is given as:

0.378 ÷ 0.3

Rewrite as a fraction

0.378/0.3

Multiply the fraction by 1

Express 1 as 1000/1000

0.378/0.3 * 1000/1000

Evaluate the product

378/300

Divide 378 by 300

1.26

Hence, the quotient of 0.378 ÷ 0.3 is 1.26

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Gerald has a punch bowl in the shape of a hemisphere as shown below.

One cup is equivalent to approximately 15 cubic inches. Which of the following is closest to the maximum number of cups the punch bowl can hold?

A. 60 cups
B. 45 cups
C. 30 cups
D. 18 cups

Answers

The closest to the maximum number of cups the punch bowl can hold is 30

How to determine the number of cups?

The given parameters are:

1 cup = 15 cubic inches

Diameter of bowl, d = 12 inches

The radius is the half of the diameter.

So, we have:

r = 6

The volume of the bowl is then calculated using:

[tex]V = \frac{2}{3}\pi r^3[/tex]

This gives

[tex]V = \frac{2}{3}\pi * 6^3[/tex]

Evaluate

V = 452.16

The maximum number of cups is then calculated using:

Cups = 452.16/15

Evaluate

Cups = 30.1444

Approximate

Cups = 30

Hence, the closest to the maximum number of cups the punch bowl can hold is 30

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Help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

PROBLEMS
1) Add the following: 30 mg, 2.5 kg and 7.0 g. Express the answer in g.
2) Express the amount of 1.243 g as:
mg ________
kg ________
mcg _______
3) How many grams of the active ingredient "aspirin" would be needed to make 500 aspirin tablets if each tablet must contain 325 mg?

Answers

Answer:

1. 2507.034 g

2. 1243mg

   0.001243kg

   1,243,000 mcg

3. 162.5g

Step-by-step explanation:

1. First of all we need to convert 30mg and 2.5kg to gram.

⇒ 1 gram = 1000 milligrams

         x     =  35mg  

⇒ 1000mg(x) = 35mg

⇒ x = 35mg    =   35   =  0.035g

        1000mg    1000

Next we convert 2.5kg to gm.

⇒ 1 kilogram = 1000g

     2.5kg   =   x  

(We then criss cross)

⇒ x = 2.5kg × 1000g = 2500g  = 2500g

                 1kg                    1

Now that we converted them all to gram, we will add them.

⇒ 30mg + 2.5kg + 7g = 0.035g + 2500g + 7g = 2507.035 ≈ 2507g

2.  We convert 1.234g into

a. mg

⇒ 1 gram = 1000 milligram

    1.243g = x

⇒ x = 1.243g × 1000mg = 1243mg = 1243mg

                1g                      1

b. kg

⇒ 1 kilogram = 1000gram

                  x =   1.243 gram

⇒ x = 1.243g × 1kg  =   1.243kg = 0.001243kg = 1.243 × 10⁻³ kg

                1000g            1000

c. mcg

⇒  1 gram = 1000000mcg

    1.243g =  x

⇒ x = 1.243g × 1,000,000mcg  = 1,243,000mcg = 1,243,000mcg

                        1 g                                   1

3. We need 500 aspirin, the amount of grams needed and we know that one tablet contains 325mg.

So now we can derive the formula such that:

⇒ 1 tablet      = 325mg

   500 tablet =  x

But first we need to convert 325mg to grams.

⇒ 1 gram = 1000mg

      x   =  325mg

⇒ x = 325mg × 1 g = 325g = 0.325g

              1000mg     1000

So now instead of using 325mg we can use 0.325g.

⇒ 1 tablet   =  0.325g

    500 tablets =  x

⇒ x = 500 tablets × 0.325g  =  162.5g = 162.5g

                      1  tablet                   1

Two adjacent rooms are rectangles, both of length 13 feet by 10 feet. Jerry wants to change the carpets in both rooms. How many square feet should he order?

Answers

Answer:

  260 square feet

Step-by-step explanation:

The area of a rectangle is given by the formula ...

  A = LW

The area of two same-size rectangular rooms will be double the area of one of them.

__

room area

Each room has an area of ...

  A = LW = (13 ft)(10 ft) = 130 ft²

carpet order

The order for carpet must be for 2 times the area of one room:

  carpet order = 2 × 130 ft² = 260 ft²

Jerry should order 260 square feet of carpet.

Please help Anyone I'm seriously almost done​

Answers

Answer:

[tex]\textsf{x = 45}[/tex]

Here, the given 2 angles are complementary angles. The sum is 90 degrees as indicated by the right angle symbol.

[tex]\textsf {Solving :}[/tex]

[tex]\implies \textsf{x - 2 + 47 = 90}[/tex]

[tex]\implies \textsf{x + 45 = 90}[/tex]

[tex]\implies \textsf{x = 45}[/tex]

two chips are drawn at random and withoit replacement from a bag containing four blue chips and three red chips. find the probability of drawing two red chips.

Answers

The probability of getting two red chips is:

P = 1/21.

How to get the probability?

The probability of getting a red chip is equal to the quotient between the number of red chips and the total number of chips.

There are 4 blue chips and 3 red chips, for a total of 7 chips.

For the first draw, the probability of getting a red one is:

p = 3/7.

For the second draw, now there are 2 red chips and 6 chips in total, so now the probability is:

q = 2/6 = 1/3

Then the joint probability, given by the product between the two individual probabilities, is:

P = q*p = (3/7)*(1/3) = 1/21.

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Determine the true statements about trend lines in scatterplots. Check all that apply.
A trend line can be used to make predictions in real-world situations.
A scatterplot that shows no correlation between the variables does not have a trend line.
A line of best fit must contain at least two of the original points.
A regression line and trend line are equivalent terms.

Answers

Answer:

give that 13.3cm is 15% of a certain length, what is the complete length

Answer: A,B and D ARE THE CORRECT ANSWERS

Step-by-step explanation:

Photo is attached, please help! Will give brainliest.

Answers

Answer:0.124402866242

Step-by-step explanation:here’s my attempt: dv/dt=d/dt(4pi/3r^3). 100=d/dt((4pi/3)*(8+X*t)^3) at t=0. 100/(4(pi)*8^2)=x where x is the rate of change of the radius. Not 100% sure though

one side of a square is represented

Answers

Answer:

therees nothing here to help you with?

Step-by-step explanation:

srry abt that but add the square number

triangle.
A,
angle CAB = 90°, angle ABC = 52° and AC = 9.2.
Calculate the length of BC rounded to 3 SF.

Answers

[tex]\\ \rm\Rrightarrow sin\theta=\dfrac{Perpendicular}{Hypotenuse}[/tex]

[tex]\\ \rm\Rrightarrow sin52=\dfrac{AC}{BC}[/tex]

[tex]\\ \rm\Rrightarrow sin52=\dfrac{9.2}{B C}[/tex]

[tex]\\ \rm\Rrightarrow B C=\dfrac{9.2}{sin52}[/tex]

[tex]\\ \rm\Rrightarrow B C=9.3[/tex]

Answer:

11.7  (3 s.f.)

Step-by-step explanation:

Given information:

∠CAB = 90°∠ABC = 52°AC = 9.2

As one of the given angles is 90°, the triangle is a right triangle.

Draw the triangle using the given information (see attached) to help visualize the problem.

To calculate the length of BC, use the sine trigonometric ratio:

[tex]\sf \sin(\theta)=\dfrac{O}{H}[/tex]

where:

[tex]\theta[/tex] is the angleO is the side opposite the angleH is the hypotenuse (the side opposite the right angle)

From inspection of the attached triangle:

[tex]\theta[/tex] = 52°O = AC = 9.2H = BC

Substitute the values into the formula and solve for BC:

[tex]\implies \sf \sin(52^{\circ})=\dfrac{9.2}{BC}[/tex]

[tex]\implies \sf BC=\dfrac{9.2}{\sin(52^{\circ})}[/tex]

[tex]\implies \sf BC=11.67496758...[/tex]

[tex]\implies \sf BC=11.7\:\:(3 \:s.f.)[/tex]

Therefore, the length of BC is 11.7 (3 s.f.).

In the diagram, points D and E are marked by drawing arcs of equal size centered at B such that the arcs intersect and . Then, intersecting arcs of equal size are drawn centered at points D and E. Point P is located at the intersection of these arcs.

Based on this construction, m∠ABP is
°, and m∠ABC is
°.

Answers

The measure of ∠ABP and ∠ABC are 32° and 64° respectively.

what is a bisector of an angle?

Any line which divides an angle into two equal halves is a bisector of that angle.

Analysis:

Since the arcs at D and E are drawn with the same radius and arc using center D and E are intersected by line PB( which is the bisector of the full arc with center B) then ∠ABP = ∠PBC = 32°.

∠ABC = ∠ABP + ∠PBC

∠ABC = 32 + 32 = 64°

In conclusion, ∠ABP and ∠ABC are 32° and 64°

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Answer:ABP is 32 degrees, and ABC is 64 degrees

Step-by-step explanation: bi hope this helped if not sorry:)

A bicycle wheel travels exactly 26/pi inches in I full rotation, what is the area, to the nearst square inch, of a circle the same size az the bicycle wheel?​

Answers

The area, to the nearst square inch, of a circle the same size az the bicycle wheel is  531 inches².

What is the area of the circle?

A circle is a bounded figure which points from its center to its circumference is equidistant.

Area of a circle = πr²

Where :

π = pi = 22/7

R = radius

The full rotation of the wheel is equal to the circumference of the wheel.

circumference of the wheel = 2 πr

26π = 2 πr

r = 13 inches

Area = 22/7 x 13³ = 531 inches²

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allen was making trail mix but he only wanted to make 1/3 of the recipe if the whole recipe called for 1/2 of a cup of peanuts how many cups will he need to make 1/3 of the recipe choose the model that matches the situation.

Answers

Answer:

the last one 1/6

Step-by-step explanation:

1/2 x 1/3 = 1/6

NEED HELP ASAP!!! PLEASE

Answers

The linear function that has a different rate of change from y = -3x+4 is A, a function with a y-intercept of -4 that passes through the point (-3,-13)

What is an intercept?

An intercept is the point where a straight line or a curve meets with the x or y axes.

Analysis:

The rate of change is the same as slope. The slope of y = -3x + 4 is -3,

All other functions Except A have a slope of -3.

for linear function A,

if y = mx + c, c = -4, x = -3, y = -13

-13= -3m - 4

-3m = -9

m = 3

In conclusion, linear function A with a y-intercept of -4 passing through the point (-3,-13) has a different rate of change from y = -3x + 4

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Find the slope please

Answers

Hi student, let me help you out! :)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

We are asked to find the slope of this graph; we are provided with two points:

[tex]\star~\mathrm{(6,0)}[/tex]

[tex]\star~\mathrm{(0,-5)}[/tex]

[tex]\triangle~\fbox{\bf{KEY:}}[/tex]

What we need in order to find the slope are two points and the slope formula.

Here's the formula:

[tex]\star~\boxed{\mathrm{\cfrac{y2-y1}{x2-x1}}}[/tex]

Where

y2 and y1 are y-coordinates

x2 and x1 are x-coordinates

Substitute the values:

[tex]\star~\mathrm{\cfrac{-5-0}{0-6}}}[/tex]

Simplify!

[tex]\star~\mathrm{\cfrac{-5}{-6}}}[/tex]

Simplify more!

[tex]\star~\mathrm{\cfrac{5}{6}}[/tex]

Hope it helps you out! :D

Ask in comments if any queries arise.

#StudyWithBrainly

~Just a smiley person helping fellow students :)

ƒ(1) = −6
f(2)= -4
f(n) = f(n-2) + f(n-1)
f(3) =

Please help!!!!!!

Answers

Answer:

f(3) = - 10

Step-by-step explanation:

given

f(n) = f(n - 2) + f(n - 1) , then

f(3) = f(3 - 2) + f(3 - 1) = f(1) + f(2) = - 6 + (- 4) = - 6 - 4 = - 10

[tex]f(3)=f(1)+f(2)=-6+(-4)=-10[/tex]

The graph of a quadratic function intercepts the x-axis in two places and the y-axis in one place.

According to the fundamental theorem of algebra, which of the following statements is correct?

Answers

The true statement about the quadratic function is that it has two distinct real zeros

How to interpret the quadratic function?

The given parameters are:

x-intercepts = 2 i.e. intercepts the x-axis in two placesy-intercept = 1 i.e. intercepts the y-axis in one place

The first highlight above means that, the function can be represented as:

y = a(x - x1)(x -x2)

Where x1 and x2 are the x-intercepts

This also means that the quadratic function has two distinct real zeros

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What is the graph of the system?
y> -x + 3
-2x+y<-1

Answers

Step-by-step explanation:

Hopefully this is helpful?

Which function is shown in the graph below?
O y = logo 4x
O y = log₁x
O y = log3x
O y = log10x

Answers

I think it is oh=log1x hope this helps

The correct function shown in the graph is,

⇒ log₁₀ (ax) = 1

What is mean by Function?

A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

It has been given that the point (3,1) is on the graph. For the point (3,1) to be on the graph, the following must hold true:

⇒ log₁₀ (ax) = 1

or , ax = 10¹ = 10

Thus, x  = 10/a

So, in order for the point (3,1) to lie on the graph, of all the given options the closest we can get is when we have Option D, that is, when a = 3. That will make x = 3.33 and thus, .

⇒ log (3 × 3.33) = 0.99 ≈ 1

Thus, out of the given options only Option D seems to be the most probable answer.

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What additional information is needed to prove the triangles are congruent by the SAS postulate

Answers

Answer: [tex]\angle XWY \cong \angle ZWY[/tex]

Step-by-step explanation:

We know that [tex]\overline{WY} \cong \overline{WY}[/tex] by the reflexive property, so we need the included angles to be congruent (meaning [tex]\angle XWY \cong \angle ZWY[/tex]

what is the quotient of 1/5 divide by (-5/7) =

Answers

Answer:

-7/25

Step-by-step explanation:

=(1/5) ÷ (-5/7)

Copy dot flip

=(1/5) * (-7/5)

=-7/25

estimate the percentage 66 2/3% of 2,600

Answers

The estimate of the percentage expression 66 2/3% of 2,600 is 1733.33

How to estimate the percentage expression?

The expression is given as:

66 2/3% of 2,600

Rewrite as:

66 2/3% * 2,600

Express the fraction as an improper fraction

200/3% * 2,600

Remove the percentage sign

200/300 * 2,600

Evaluate the product

1733.33

Hence, the estimate of the percentage expression 66 2/3% of 2,600 is 1733.33

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Which criterion, if any, could prove the triangles are congruent?

Answers

Answer: None

Step-by-step explanation:

There is only one pair of angles and one pair of sides, which is not sufficient to prove triangle congruence.

if g(X)=3x-5,then find g^-1(5),where g is one to one onto function​

Answers

Answer:

g^-1(5)=10/3

Step-by-step explanation:

g(x)=3x-5

g(x)= y

g^-1( y)=x

3x-5=y

3x=y+5

x=y+5/3

g^-1(y)=y+5/3

g^-1(5)=5+5/3

g^-1(5)=10/3

The price of a gallon of milk increased by 9 cents. This represented a price increase of 2%. What was the original price of the milk?​

Answers

Answer:

$ 4.50

Step-by-step explanation:

2% of the price = 9 cents

.02 x   = 9

x = 9 / .02 = 450 cents     or  $4.50

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