How many

2/5 for bread. the rest is used to make batches of muffins. 16 pounds is used for the bread. two thirds is in each batch of muffins. how many batches can you make

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.