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OpenStudy (anonymous):
(Volume of rotation) "Show that the volume of a torus (doughnut shape, or inner tube) is (2πR)(πr^2) where r is the radius of the 'tube' and R is the radius of the 'ring' (measured to the centreline of the tube)."
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OpenStudy (dan815):
ok
OpenStudy (dan815):
|dw:1384671046325:dw|
OpenStudy (dan815):
saw i rotate around this axis like so
OpenStudy (anonymous):
It's rotating around the x-axis.
OpenStudy (dan815):
samething
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OpenStudy (anonymous):
Oh my bad!
OpenStudy (dan815):
so what would radius be as a function of x or y
OpenStudy (dan815):
|dw:1384671211014:dw|
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