Respuesta :

Answer: 4th option

Explanation:

x = 2/3 • pi • r^3
x divide by 2/3 = pi • r^3
x • 3/2 = pi • r^3
3x/2 = pi • r^3
3x/2 divide by pi = r^3
3x/2 • 1/pi = r^3
3x/2(pi) = r^3
Cube root(3x/2(pi)) = r