Question

The formula for the surface area of a sphere is A = 4*pie*r^2. What is the formula solved for r.

Answer 1

He is right

Explanation:

Answer 2

note: pie=pi=π

divide both sides by 4pi

`(A)/(4\pi)=r^2`
sqrt both sides

`\sqrt{(A)/(4\pi)}=r`

`r=\sqrt{(A)/(4\pi)}`

`r=(√(A))/(√(4\pi))`

`r=(√(A))/(2√(\pi))`
we need to rationalize the denomenator
multiply it by (√π)/(√π)

`r=(√(A\pi))/(2\pi)`