Question: Let S be the solid obtained by rotating the region shown In the figure about the y-axis. (Assume a = 12 and b = 4.)

Let S be the solid obtained by rotating the region shown In the figure about the y-axis. (Assume a = 12 and b = 4.) Sketch a typical approximationg shell. 0.6 1.0 -1.0 -0.5 0.5 1.0 Find its circumference c and height h. c(x) = 21x h(x) = 12 sin( 4x-] Use shells to find the volume V of S. V = 50
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