Question 311185
The volume of rubber in cubic centimeters is given by V = (4/3)*Pi*R^3 - (4/3)Pi*r^3 
where the inside radius is r and the outside radius is R centimeters.
 Rewrite the formula by factoring the right-hand side completely.
V = {{{4/3}}}*{{{pi(R^3 - r^3)}}}