The same amount of steel used to create eight solid steel balls, each with a radius of 1 inch, is used to create one larger steel ball. What is the radius of the larger ball?

The volume of the 8 steel balls =

8 * (4/3)pi = 32/3 pi

So....to find the radius, r, of the large ball, we have

32/3 pi = (4/3)pi (r)^3

(32/ 3) (3/4) = r^3

32 / 4 = r^3

8 = r^3

r = 2

Thanks so much, CPhill!