220k views
3 votes
A child's wading pool has a diameter of 7 feet an pool has a diameter of 7 feet and is 8 inches deep . How many gallons of water the pool hold ? Round your answer to the nearest 0.1 gallon ( one cubic foot holds 7.5 )

User Oana
by
6.8k points

1 Answer

7 votes

Final answer:

The pool can hold approximately 64.8 gallons of water.

Step-by-step explanation:

To calculate the number of gallons of water the pool can hold, we first need to determine the volume of the pool. The pool is in the shape of a cylinder, so we can use the formula for the volume of a cylinder: V = πr^2h, where V is the volume, r is the radius, and h is the height.

Given that the diameter of the pool is 7 feet, the radius is half of that, which is 3.5 feet. The height of the pool is 8 inches, which is 8/12 = 2/3 feet.

Substituting these values into the formula, we have V = π(3.5)^2(2/3)

Calculating this, we find that the volume of the pool is approximately 8.64 cubic feet.

Since 1 cubic foot holds 7.5 gallons, we multiply the volume by 7.5 to find the number of gallons: 8.64 * 7.5 = 64.8 gallons.

Rounding to the nearest 0.1 gallon, the pool can hold approximately 64.8 gallons of water.

User MatthewScarpino
by
8.0k points