we are given the diameter = 25 in
we are request to find
How many square inches of rubber are used to make the ball
since we are requesto to find square inches of rubber, we will find the surface area of the sphere
the surface area of a sphere is given by the following
[tex]SA=4\pi r^2[/tex]Since Diameter=2r
r= diameter/2= 12.5in
then
[tex]SA=4*\pi *12.5^2[/tex][tex]SA=625\pi[/tex]then
it is required 625pi inches^2 of rubber to make the ball
