Use the disk method to find the volume of the solid generated when the region bounded by y=15sinx and y=0, for 0 </= x </= pi, is revolved about the x-axis.

Answer 1

v = Int(πr^2 dx)[0,π]
r = y = 15sinx

v = 225π*Int(sin^2 x dx)[0,π]
= 225π * π/2 = 225π²/2