The cube root of 250 is 6.29. The cube root of a number, x, is equal to the number, y, such that y times y times y equals x. For the number 250, 6.29 times 6.29 times 6.29 is equal to 250.
It is possible to simplify a cube root by factoring out the cube of a whole number. Since 250 is equal to 125 times two, and 125 is the cube of five, the equation can be written as the cube root of 125 times the cube root of two. Simplified further, the equation is five times the cube root of two.