The PE classes collected canned food for a food drive last Thanksgiving. The goal was to collect 600 cans. They collected 1800 cans. What percent of their goal did the reach?

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.