Question

Write formula with radius depending on surface area

Answer 1

`r=(1)/(2) \sqrt{(S)/(\pi )}`

Explanation:

Just solve for r in the formula.

Since the formula is

`S=4\pi r^(2)`

divide by 4pi

`r^(2)=(S)/(4\pi )`

then the square root to solve for r,

`r=\sqrt{(S)/(4\pi )} =(1)/(2) \sqrt{(S)/(\pi )}`