Question

A cylindrical rain barrel with a diameter of 2.5 feet and a height of 3.5 feet is filled to a height of 1.5 feet. How many more gallons of water can the barrel hold? Round your answer to the nearest whole number. (1 ft3≈7.5 gal)

How I am supposed to answer it: The rain barrel can hold about (BLANK) more gallons of water.

Answer 1

74 gallons

Explanation:

Volume of water to be added (in ft3) = π
`(1.25)^(2)`(2.0)

= 9.8175 ft3 (5 s.f)

Volume of water to be added (in gal) = 9.8175 (7.5)

= 74 gallons