Four girls run a relay and finish the race in 6.48 minutes if each girl ran at the same speed how many minutes did each girl run? Round to the nearest tenth.

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.