What is the distributive property for 48 plus 72

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.

Enter the amplitude of the function. f(x)=3cosx

Answer for 15 points (look at the image)