Answer: Assuming that the can is a cylinder (most cans are) we can use the formula V=πr2h in order to find the volume. R is the radius of the cylinder which is half of the diameter meaning the radius of the cylinder is 4 cm. The h used in the formula refers to the height which is 21 cm in this problem. Now using the formula you can calculate the answer by plugging in the values.
8^2π
64*h
64π*21
1344π
1344*π
4222.30052642
V = 4222.30052642 cm^3 (round if you need too)
or if you need an exact answer use the answer with pi:
V = 1344π cm^3
Explanation: