Assuming the ball to be completely spherical, its volume can be calculated using:
Volume = 4/3 * pi * r^3
Because the measured parameter is the diameter of the ball, we may substitute:
r = d/2 into the equation:
Volume = 4/3 * pi * d^3 / 8
Using this equation, Sheena can compute the volume to be:
V = 4/3 * pi * (24)^3 / 8
V = 7,238.2 cubic centimeters
