Solve the empty gas tank of a truck needs to be completely filled. the tank is shaped like a cylinder that is 3.5 ft long with a diameter of 2.4 ft . suppose gas is poured into the tank at a rate of 1.7 ft3 per minute. how many minutes does it take to fill the empty tank

The gas tank of a truck cylinder is 4 ft long with a diameter of 2.5ft. 
At the gas station, a pump pours gas at the rate of 3ft cubed per minute.
How many minutes does it take to fill the empty tank with that pump?
:
Find vol of a cylinder 

r = 1.25 ft

V = 19.635 cu ft
:
time = 
t = 6.545 minutes