Question

I have a formula I can’t figure out. V=4/3 times pi r cubed. Solve the formula for r cubed

Answer 1

You need to isolate the r cubed/r^3:

Multiply each side of the equation by 3 to get cancel out the denominator of 3
on the right side:

3V=4 x pi x r^3

Then, divide both sides of the equation by 4pi to cancel out the 4pi on the right side:
3V/4pi=r^3


r^3 = 3V/4pi

(r cubed equals3V over/divided by 4 times pi)