Let S be the solid obtained by rotating the region shown in the figure about the y-axis. a = 6 b = 3 y = a sin(bx²) π/b Sketch a typical approximating shell. (Do this on paper. Your instructor may ask you to turn in this graph.) Find its circumference c and height h. c(x) h(x) = Use shells to find the volume V of S. V =

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