Pls me asap with (must show ) + lots of *no calculator* *best is show picture with work! *

What is the exact volume of the cylinder? 16in going into the middle of the top of the cylinder and 40in in height a) 25,600(pi)3 b)10,240(pi)3 c)1280(pi)3 d)640(pi)3

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

The difference between tax advoidance and tax evasion