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posted by John Thursday, February 28, 2013 at 12:00am.
The volume of a sphere is numerically equal to the surface area of the sphere. If this value is equal to N \pi, what is the value of N?
4/3 pi r^3 = 4 pi r^2 1/3 r = 1 r = 2 v = a = 36pi, so N = 36
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