Asked by dee
The region bounded by y = x^2 and y = 4 is rotated about the line y = -1. The volume of the solid generated is given by
Answers
Answered by
Steve
using discs,
v = ∫[0,2] π(R^2-r^2) dx
where R=4 and r =y=x^2
using shells,
v = ∫[0,4] 2πrh dy
where r=y and h=x=√y
v = ∫[0,2] π(R^2-r^2) dx
where R=4 and r =y=x^2
using shells,
v = ∫[0,4] 2πrh dy
where r=y and h=x=√y
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