#### Answer

A) $S(2)=50.27$ (rounded), $S(3) = 113.1$ (rounded)
B) Surface area of a sphere.

#### Work Step by Step

A) Plug in 2 and 3 for "r" and solve the problem, and rounding to two places will give you the surface area.
$S(2)=4\pi(2)^2$
$S(2)=4\pi(4)$
$S(2)=50.27$
$S(3)=4\pi(3)^2$
$S(3)=4\pi(9)$
$S(3)=113.1$
B) The problem states that the surface area is represented by S. The formula given is used to solve for the surface area