The ratio of the volumes of two spheres is 64:125. What is the ratio of their radii?

Omar,

All you need to solve this problem is V = c* r

^{3}where c=(4/3)π and is a constant. If we now apply this relationship to the problem we have 64/125=(r_{1}/r_{2})^{3 }solving for the ratio of the radii gives (r

_{1}/r_{2})=(64/125)^{1/3}=.8 or 4/5Hope this helps

Jim