Th question is :
Consider the region bounded by y = cos(x), y = 0, x = 0, and x = /4. Rotate the region around the x-axis. Sketch the region. Write an integral giving the volume of the solid. Give your answer using the form below.
What i got was that A=0 B=pi/4 and the integral is pi*cos(x)^2 dx
Im not sure if this is correct can anyone double check me please? thanks