Answer:
[tex]\sqrt{\frac{S}{4\pi } } =r[/tex]
Step-by-step explanation:
S = 4 pi r^2
Divide each side by 4 pi
S / (4 pi) = 4 pi r^2 / (4 pi)
S / (4 pi) = r^2
Take the square root of each side
sqrt(S / (4 pi)) =sqrt( r^2)
sqrt(S / (4 pi)) =r
[tex]\sqrt{\frac{S}{4\pi } } =r[/tex]
