A sphere is inscribed in a cube. What is the ratio of the volume of the inscribed sphere to the volume of the cube? Express your answer as a common fraction in terms of $\pi$.
the diamiter of the sphere will be the length of the side of the cube(lets call it S) thus...
4/3*pi*(1/2s)^3 PI/6
___________ = _____
s^3 1
+52 
