Abaker is making walnut bread. the recipe uses 2/3 cup of walnuts for each bread recipe. the baker had 7 1/2 cups of walnut

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.