MATHEMATICS MIDDLE SCHOOL

A beach ball has a radius of 12 in.. How much air will the beach ball hold? (leave your answer in terms of π)

Answers

Answer 1

Answer:

Answer:

Volume of beach ball is $2304\pi\ in^(3)$ .

Step-by-step explanation:

Formula

$Volume\ of\ sphere = (4)/(3)\pi r^(3)$

Where r is the radius of the sphere .

As given

A beach ball has a radius of 12 in.

r = 12 in

$Volume\ of\ beach\ ball= (4)/(3)\pi* 12* 12* 12$

$Volume\ of\ beach\ ball= (4* 12* 12* 12)/(3)\pi$

$Volume\ of\ beach\ ball= 2304\pi\ in^(3)$

Therefore the volume of beach ball is $2304\pi\ in^(3)$ .

Answer 2

Answer: The equation to find the volume of a sphere is V=4/3(pi)r^3.
So I cubed 12, times by 4, and divided by 3, so the volume of the beach ball is 2,304(pi) cubic inches. Hope this helps.

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On a scale drawing with a scale of 1/20, the height of the building is 8 inches. How tall is the actual building in feet?

Answers

that means its downgraded to 1/20 of actual height, let actual height is x. Then
(1/20) * x = 8, x = 20 * 8 = 160, actual height = 160 inch
160 inch = 160/12 feet = 13 1/3 feet or 13.333 feet.

18% of 90 is what number?

Answers

90/x=100/18
(90/x)*x=(100/18)*x - multiply both sides of the equation by x
90=5.55555555556*x - divide both sides of the equation by (5.55555555556) to get x
90/5.55555555556=x
16.2=x
x=16.2
18% of 90=16.2

The answer to you problem is 16.2, the equation you needed was, 90/0.18

An equation is shown below...4c+2c=4c+11/2

What value of 2c makes the equation true.