+100 (r^2)d? Well, get the diameter of thecircle, and plug it into the 'd' part. I dont know what 'r' is, but it usually refers to the radius of the circle. What value are you trying to find and what information do you have?
+37146 Nothing I know of....but it will be in the dimension of 'units'^3
Maybe THIS is for what you are looking?
d= diameter = 2r and r = 1/2 d
(1/2d)^2 x d = 1/4 d^2 x d = 1/4 d^3
or r^2 x 2r = 2 r^3
