Answer:
<h2>R = 16 in</h2>
Step-by-step explanation:
The formula of a Surface Area of a sphere:

R - radius
We have

Substitute:
<em>divide both sides by π</em>
<em>divide both sides by 4</em>

Answer: I'll help you, but where is the question?
Step-by-step explanation:
63/84 divided by 21/21
=3/4
or
63 divided by 84=0.75 which is the same thing as 3/4