1.express the volume in terms of the diameter d of the sphere
2.write an equation to find the density of the sphere in terms of mass M and diameter d
sphere Volume = 4 x pi x r^3 / 3
density = mass/volume
The Attempt at a Solution
1. d=2r so V = d^3 x pi / 6
2. density = M / V(=d^3 x pi /6) = 6M/pi x d^3
but my teacher said it is wrong. what is wrong with my answer?