Fill a beaker or graduated cylinder with enough water to completely immerse the sphere in. The POWER function will take any number and raise it to the power of any other number. The formula to find the volume of a sphere you use the formula.
How to calculate volume of a sphere.
Thus the edges of the cube are 9 inches and because the basketball has the same width as the box it comes in the diameter of the ball is also 9 inches. Its radius is half of that or 45 inches. Calculating a Spheres Radius from Volume. Once you have the radius plug it into the formula and solve to find the volume.