Question

Back to Zola! How much water does he need to refill his pool if the diameter is 5 feet and the height is 3 feet? If there are 7.5 gallons in a cubic foot, how many gallons are needed to fill the pool?

PLEASE HELP​

Answer 1

Zola needs about 442.9 gallons of water to refill his pool.

Explanation:

To calculate the volume of Zola's pool, we need to use the formula for the volume of a cylinder:

V = πr^2h

where r is the radius (half of the diameter), and h is the height.

The radius of the pool is 2.5 feet (5 feet / 2), and the height is 3 feet, so:

V = π(2.5)^2(3)

V = 58.91 cubic feet

To convert cubic feet to gallons, we multiply by 7.5:

58.91 cubic feet × 7.5 gallons/cubic foot ≈ 442.9 gallons

Therefore, Zola needs about 442.9 gallons of water to refill his pool.