Question 389530
The volume of a cylinder is found by multiplying the area of its circular base by its height
cylinder = b h = pi*r^2*h
pi*4^(2)*60

Squaring a number is the same as multiplying the number by itself (4*4).  In this case, 4 squared is 16.
pi*16*60

Multiply ` by 16 to get 16`.
16pi*60

Multiply 16` by 60 to get 960`.
960pi

The approximate value of pi*4^(2)*60 is 3015.929.
3015.929


You didn't specify if you needed to round, if so:
3016 gallons