Find the volume of the solid generated by revolving the region bounded by y equals 5 startroot bold sin x endroot, y equals 0 commaand x 1 equals startfraction pi over 3 endfraction and x 2 equals startfraction 3 pi over 4 endfraction about the x-axis.

Looks like the region in question is the one bounded by and the -axis, between and . Revolving about the -axis is trivial using the disk method:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.