Homework Help: Math

Posted by Anonymous on Tuesday, March 15, 2011 at 10:45am.

A circular swimming pool is 4 feet deep and has a diameter of 15 feet. If it takes 7.5 gallons of water to fill one cubic foot, to the nearest whole number, how many gallons are needed to fill this swimming pool.

Diameter = 2r

A = π r^2

V = 4A

W = 7.5V

Math - PsyDAG, Wednesday, March 16, 2011 at 2:35am
Plug in the values, starting with the first equation.

D = 2r, therefore D/2 = r

Put the value of r in the second equation to find A.

Put the value of A in the third equation to find V.

W = # of gallons = 7.5V

You can do the calculations.

Answer this Question

Related Questions

Math - A circular swimming pool is 4 feet deep and has a diameter of 15 feet. If...
math - A circular pool has a diameter of 12 feet. The pool is 5 feet deep ...
Math - A swimming pool that is 100 feet in length by 10 feet deep and 40 feet ...
Math - A swimming pool is 40 feet long, 20 feet wide, 8 feet deep at the deep ...
calculus - my circular swimming pool has a 29 foot diameter and is 8 feet tall. ...
Calculus - A swimming pool is 40 feet long, 20 feet wide, 8 feet deep at the ...
math - If a swimming pool that has a diameter of 40 feet and a height of 5 feet ...
math - calculus - Suppose that water is pouring into a swimming pool in the ...
math - The portion of a swimming pool that is below the full water line measures...
calculus - Suppose that water is pouring into a swimming pool in the shape of a ...

For Further Reading

First Name:
School Subject:
Answer: