a certain coin is a circle with a diameter of 18mm. What is the exact area of either face of the coin in terms of pi (3.14)

Answers

Answer 1

Answer:

254.34 mm².

Step-by-step explanation:

For this problem, we use the formula to find the area of a circle, which is[tex]A=\pi r^2[/tex] . [tex]r[/tex] is the radius, which we can find by dividing the diameter by 2 and [tex]\pi[/tex] in this case is 3.14.

[tex]A=\pi r^2\\A=3.14*(18/2)^2\\A=3.14*9^2\\A=3.14*81\\A=254.34[/tex]

Therefore, the area of either face of the coin is 254.34 mm².

I hope this helps!


Related Questions

Which fraction model best represents 3 2/6??

Answers

Answer:

A

Step-by-step explanation:

3x 2/6 is 1 and if you put all the shaded blocks together for A, you will get 1 whole

2 questions…
1. order the intergers {-10, -25, 25, 10, -50} from least to greatest.
2.what is the area of the rectangle?
(image provided for both questions, thank you!)

Answers

Answer:

1) (-50) <(-25) < (-10) < 10 < 25

2) 150 in^2

Step-by-step explanation:

For the first question we list the numbers according to their sign(start from negative)

For the second question we multiply height with width to find the area of the rectangle.

Question :-

1. order the intergers {-10, -25, 25, 10, -50} from least to greatest.

2.what is the area of the rectangle?

Answer:-

1.

we know that,

negetive numbers are smaller than positive number,

According to the question,

order the intergers {-10, -25, 25, 10, -50} from least to greatest is:-

[tex]\bold{(-50) <(-25)<(-10)<10<25  }[/tex] 

2.

we know that,

Area of rectangle =length ×breath

According to the question,

lenght=15 inbreadth=10 in

[tex]\bold{Area=15×10   }[/tex] 

[tex]\bold{Area=150~in^{2}   }[/tex] 

what are the first 5 terms of 30-n^2

Answers

Answer:

29, 26, 21, 14, 5

Step-by-step explanation:

To find the first 5 terms, substitute n = 1, 2, 3, 4, 5 into the n th term formula.

30 - 1² = 30 - 1 = 29

30 - 2² = 30 - 4 = 26

30 - 3² = 30 - 9 = 21

30 - 4² = 30 - 16 = 14

30 - 5² = 30 - 25 = 5

The first 5 terms are 29, 26, 21, 14, 5

Timothy bought groceries two days during the week: • Timothy purchased $11.25 worth of groceries and paid $12.15 after taxes on Monday • Timothy paid $59.13 after taxes on a purchase of groceries that cost $54.75 on Friday Which equation models the relationship between the cost of groceries after taxes, and the cost of groceries before taxes?​

Answers

Answer: See explanation

Step-by-step explanation:

You didn't give the options but let me help out.

Timothy purchased $11.25 worth of groceries and paid $12.15 after taxes on Monday.

We would solve this using direct proportion.

y = kx.

12.15 = 11.25k

k = 12.15 / 11.25

k = 1.08

Timothy paid $59.13 after taxes on a purchase of groceries that cost $54.75 on Friday.

y = kx.

59.13 = 54.75k

k = 59.13 / 54.75

k = 1.08

The equation that models the relationship will be:

y = 1.08x

On Monday, Jack and Jill walked from their home up a hill to get to the bus stop. They walked 4 yards every 3 seconds.

Write an equation to represent the distance, d, Jack and Jill walked over time, t

Answers

Answer:

zd mngchvbm vhgfcnvmbfgv bkgjfdsfzxcbvnm,jlhfxgcvbnm,.mn.bvcxzvbnm,./mjmhgnfbdvcdvfbghj,k.l/k.jhgfdghjkl;jhgfdsghjkljhgfdhjklhgfdfsghjkklhgfdhjkklhgyftdfgfhjklkhgfdsghjklkkhgyftdfsgfhjkkhhtgf

Step-by-step explanation:

helpppppppppppppppppppppp meeeeeeeeeeeeeee

Answers

Answer: b

Step-by-step explanation: because five hunderedths is bigger than nine hundredthe which is not equal

please give me brainLYEST I really need it please give me I beg you

What is the measure of angle x? Show or explain how you know.

Answers

Answer:

65 degrees

Step-by-step explanation:

y is a right angle and a is 30 degrees. this means that the supplementary engle of x is 45 plus 70 which is 115. 180-115 = 65 degrees.

a num

A retailer purchased a photocopy machine for Rs 1.60,000 from a dealer. Helshe

spent Rs 2,500 for transportation and Rs 1,500 for the local tax. If he/she sold it at
a profit of Rs 6,000 to a customer, how much did the customer pay for it with 13%
VAT?

b number

A supplier sold a machine levying 13% VAT on Rs 3,20,000 to a retailer. The

retailer spent Rs 10,000 for transportation and Rs 5,000 for the local tax. If the
retailer sold it at a profit of Rs 15,000 to a customer, how much did the customer
pay for the machine with 13% VAT?​

Answers

Answer:

answer is rs 192100ra 395500

during a fundraiser ms dowsons class raised $560 which is 25% more than mr caseys class raised. Mr caseys class raised how much money

Answers

Answer: It's 585 i read it wrong sorry

Step-by-step explanation:

(8.3)
(2,3)
Need help please

Answers

Answer:

AB = 6 units

Step-by-step explanation:

Given A(8, 3 ) and B(2, 3 )

Since the y- coordinates in both points are 3 then this is a horizontal line.

The length of AB is then the difference of the x- coordinates, that is

AB = 8 - 2 = 6 units

solve the questions it is direct and indirect variations

Answers

Answer:

v = $312.5

Step-by-step explanation:

Let

Value of the gem stone = v

Weight of the gemstone = w

v = k * w²

Where,

k = constant of proportionality

w = 4 carat

v = $200

v = k * w²

200 = k * 4²

200 = k * 16

200 = 16k

k = 200/16

k = 12.5

Find v when w = 5 carat

v = k * w²

= 12.5 * 5²

= 12.5 * 25

= 312.5

v = $312.5

Help me plz???!!!!!?!?!?

Answers

Answer:

H

Step-by-step explanation:

use slope of -2/3 and point (-4.5, 10) as input into the slope-intercept form of a line, which is y = mx + b

10 = -2/3(-9/2) + b

10 = 3 + b

7 = b

y = -2/3x + 7

2s + (-4s) simplify

Answers

Answer:

-2s

Step-by-step explanation:

Answer:

-2s

Step-by-step explanation:

We have: 2s + (-4s)

Take -4s outside of the parentheses and we now have: 2s - 4s

Now subtract and the simplified equation will be: -2s

For the following equation, write two more equations, using
:-11 + x=7
Type your answer here...

Answers

Answer: 88

Step-by-step explanation:

you divied and add

88 gotta divide and add

Given: RST, RS = 15, ST = 20, and TR = 29
Which inequality correctly compares the measures of the angles of RST?

Answers

Answer:

can i see a picture?

Lisa takes a loan for $ 5000 from the bank. Every month the bank charges her 1 % interest on the
money she owes and adds this amount to her outstanding balance. If Larissa never makes a
payment, how much will she owe the bank after 1.5 years?

Answers

Answer 900

Step-by-step explanation:1% of 5000 is 50 1.5 years is 18 months 50 times 18 is 900


When a number increased by 4 is doubled, the result is the same as whe the number is increased by 20. Find the number
You MUST answer all of the questions below to get full credit. Please take
• Show your setup (how would it look on a Balanced Scale?)
• What does X equal?
• Check:

Answers

Answer:

X = 12

Step-by-step explanation:

When a number increased by 4

Let that number = x

x + 4

is doubled...

2(x + 4)

the result is the same

=

when the number is increased by 20

x + 20

Find the number

2 (x + 4) = x + 20

2x + 8 = x + 20

2x - x = 20 - 8

x = 12

What does X equal? X equals 12

Check:

Insert the x = 12 into the equation;

2 (x + 4) = x + 20

2 (12 + 4) = 12 + 20

2 (16) = 12 + 20

32 = 32

Reasons why each one of those don't belong​

Answers

Answer:

Because if you give the power of 2 to all of them you get a different number

1. 20 squared+ 21 squared = 841

Answer to number 1

1) 20+21 =41. Since 20^2+21^2 both have ^2 on top. The ^2 would stay the same. So that means the answer would be 41^2 for the first one which is why it is incorrect

2)Same for this. 4^2+5^2= 9^2


3)a^2+b^2 = ab^2 because since a and b are different letters/variables you cannot combine them therefore it is just ab.


4) (-1)^2 = 1 because -1 multiply by -1 again you would get positive 1. Next you do 1+0^2 = 1. Because 0^2 is just 0 because 0times 0 =0 so 1+0 = 1

0.027 x 0.008 what is the answer to that question

Answers

Answer:

the answer is around 0.000215 or 0.000216

Step-by-step explanation:

Hope this helps :D

Answer is
0.000216
Hope this help

x−5.2=−18.73


Need

Help

Answers

Answer:

-13.53

Step-by-step explanation:

x=-13.53

Hope it helped

y=120w+200 y intercept

Answers

Answer:

w= - 5/3 + 1/120y, y eR

Step-by-step explanation:

y=120w + 200

Move the terms

-120w=200-y

Divide both sides

w= - 5/3 + 1/120y

Write in parametric form

w= - 5/3 + 1/120y, y eR

The dimensions of a rectangular building used to store tools for electrical lineman has a length of 12x+24 feet and the width of 20x-10 feet.

1.Write the expression that represents the area of the building, in terms of x.
2. Write the expression that represents the perimeter of the building, in terms of x.
3. If the perimeter is going to be 220 feet, what are the dimensions of the building.

Answers

Answer:

a) Area = 2x² + 3x - 2

b) Perimeter = 64x + 28

c) Length = 60 feet and Width = 50 feet

Step-by-step explanation:

It is given that:

Length of building = 12x + 24

Width of building = 20x - 10

Area = Length * Width

Area = (12x + 24) * (20x - 10)

Area = 12x(20x - 10) +24(20x-10)

Area = [tex]240x^2-120x+480x-240[/tex]

Area = [tex]240x^2+360x-240 = 2x^2+3x-2[/tex]

Perimeter = 2 (Length + Width )

Perimeter = 2 (12x + 24 + 20x - 10 ) = 2 (32x +14 )

Perimeter = 64x + 28

Putting Perimeter = 220

220 = 64x + 28

64x = 220 - 28

64x = 192

Dividing both sides by 64

x = 3

Length = 12(3) + 24 = 36 + 24 = 60 feet

Width = 20(3) - 10 = 60 - 10 = 50 feet

Therefore,

a) Area = 2x² + 3x - 2

b) Perimeter = 64x + 28

c) Length = 60 feet and Width = 50 feet

Solve this system by Linear Combination (Elimination)
2.
2y = 4x + 18
-6x + 3y = 27
3

Answers

They result in the same equation

rewrite it:

2y = 4x +18

3y = 6x + 27

divide so that you have only y

y = 2x + 9

y = 2x + 9

Draw the graphs of the lines below on the same grid to find the coordinates of the point of
intersection.
y = x
y = 3x - 4

Answers

Answer:

(2,2) is the solution of the given lines.

Step-by-step explanation:

Given that,

y = x ..(1)

y = 3x-4 ...(2)

We need to find the coordinates of the point of intersection.

From equation (1) and (2).

x=3x-4

4 = 3x-x

4 = 2x

x = 2

Also,

y = 2

Hence, the coordinates of the point of  intersection is (2,2).

Which equation represents a line that is a perpendicular bisector to the line joining the points A(3,-4) and B( 5 , -2)?
1. y +4 = -1(x -3)
2. y + 3 = -1(x - 4)
3. y -1 = 3(x - 4)
4. x + y = -1

Answers

Answer is third......

Question 5

Maria can bake 35 cookies in of an hour. How many cookies can
she make in 4 hours?

Answers

Answer:

140

Step-by-step explanation:

just mutiply 35 by 4, thats h0w i g0t it anyways, h0pe this helped :)

Answer:

its 140 in 4 hours

Step-by-step explanation:

hope this helps!

Which of the equations can be used to create the sequence below?



−1,−5,−25,−125,...

Answers

Answer:

the answe is Multiply by 5

Step-by-step explanation:

Well you didnt give any answer choices :/

-1*5= -5

-5*5= -25

-25*5= -125

etc

Hope this helped pls give brainliest

eight less than a number isless than or equal to 10​

Answers

Answer:

8<x≤10

Step-by-step explanation:

Answer:

x-8≤10

x≤18

Step-by-step explanation:

x-8≤10

+8 +8

x≤18

Carly walks 30 feet in seven seconds. At this rate, how many minutes will it take for Carly
to walk a mile if there are 5,280 feet in one mile? Round your answer to the nearest tenth
of a mile.

Answers

1232 minutes i think


Here is a list of numbers.
-45
-21
-16
12
33
40
a) Write down two numbers from the list that add up to -9

Answers

Answer:

33-40-45

Step-by-step explanation:

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This would cost her $48,000 to install but would save her about $20,000 per year in electricity costs.Stephen points out that a wind turbine would not pollute the air like the power plants do to make energy. He also notes that many times wind power plants make rent payments to the farmer or rancher for the use of the land, providing landowners with additional income.Option 2Aniyah could replace the irrigation pumps for her fields. This would cost her $24,000 to do but would save her about $6,000 per year in electricity costs.Stephen explains that about 25 percent of the electrical energy used for Aniyahs irrigation was being wasted due to poor pump and motor efficiency. By replacing these pumps, Aniyahs crops could be watered in a much more efficient fashion.Aniyah wants to save money, but she also wants to make sure that none of the changes she makes will affect the crops she produces and, in turn, the health of her customers. 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