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?
Geometry - Steve, Thursday, February 28, 2013 at 12:07am
4/3 pi r^3 = 4 pi r^2
1/3 r = 1
r = 2
v = a = 36pi, so N = 36