Question

Sketch the region enclosed by the lines x = 0, x = 6, y = 2, and y = 6. Find the volume of the solid formed when the region is revolved around the y-axis.

Answer 1

big cylindar - little cylindar

Answer 2

or rather, since x=0, just one big cylindar radius is 6 and height is 4

Answer 3

When I sketched the lines, it looked more like a right triangle, which is why I am confused.

Answer 4

x = 0, x = 6, y = 2, and y = 6