The radius, r, in centimeters, of a melting snowball is given by r=50-2.5t, where t is time in hours. the snowball is spherical, with volume V=4/3(pi)r^3 cm^3. Find a formula for V=f(t), the volume of the snowball as a function of time.

Answer 1

Just sub the value of r into the volume formula

V = (4/3)π(50 - 2.5t)^3

expand if necessary, I wouldn't.