The sum of the lengths of all the edges of a cube is 60 cm. Find the number of cubic centimeters in the volume of the cube.
I know that a cube has 12 edges, and they are all congruent, so each edge must have length 60/12 = 5 cm. The volume of a cube is the length of one edge cubed, so the volume is 5^3 = 125 cubic centimeters. 