What is the exact volume of a cylinder 4" with by 8" length the answers are 32in 64in 128in 512in

Volume of a cylinder is:

π x radius² x height

Radius = width / 2 = 2

so:

π x 2² x 8 = 32π = 100.53

I'm guessing the answer is "32in" because that's the only answer that matches the answer 32π. Maybe the units are wrong in the question.