Question

Jensen has an above ground pool in the shape of a regular octagon. Opposite sides are 25 feet apart and each side is 10.4 feet long. It requires 7.5 gallons to fill one cubic foot. How much water is need to fill the pool with 3 feet of water.

A. 3900
B. 5850
C. 1560
D. 11700

Answer 1

`11700`

Explanation:

The formula of a octagon is Area of octagon = 8(1/2 × b × h), which is 520ft.

520ft² × 3ft=1560

1 cubic ft takes 7.5 gallons to fill，

11700