The formula for the volume of a cylinder is:
V = πr^2h
Where r is the radius and h is the height.
You are given what to use for π, so all you need to do is replace the letters in the formula with the given numbers:
V = 3.14*3^2*4
V = 3.14*9*4
V = 3.14*36
V = 113.04 cubic feet
