Abox of cereal advertised that the new box contained 30% more cereal than the previous box. if the new box contains 26 ounces of cereal, how many ounces of cereal were in the previous box?

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.