The combined volume of two identical cubes is 250 cubic centermeters. what is the measure of one cube's edge?

First, we know that the cubes are identical, therefore, they would have half the combined volume. 

Each cubes's individual volume is 250/2 = 125 cubic cm 

Since we know that this shape is a cube, we also know that all the dimensions of a cube are equal. 

v=s³ where v is the volume and s is the side length 

125 cubic cm=s³
∛125=s 
5 cm=s 

One of the cube's edge dimensions would be 5 cm.

Hope I helped :)