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)
The rain barrel can hold about _____ more gallons of water.

Answer 1

radius is 1.25 feet

Volume is pi*r^2*h=1.5625*pi*3.5=17.1806 ft^3.

There are 7.48 gallons/ft^3

128.51 gallons