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March 30, 2015

March 30, 2015

Posted by **karlei** on Friday, April 16, 2010 at 12:00am.

- calculus -
**Reiny**, Friday, April 16, 2010 at 8:30amHint:

Why don't you translate the whole configuration down 2 units?

Then you would "find the volume of the solid formed by revolving the regions bounded by the graphs of y = 1 - x^2 and the y=2 (the x-axis) about the x-axis"

Hint #2

By the "Just-look-at-it Theorem" the x-intercepts are ±1 and there is symmetry, so you could just take it from 0 to 1 and double that.

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