An archeologist in turkey discovers a spear head that contains 32% of its original amount of c-14. find the age of the spear head to the nearest year.

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.