7. The formula for the area of a circle is A = nr2. Which equation shows the formula in terms of r?

r = √A/n

Step-by-step explanation:

the formular given as the area of circle

A = nr²

now inorder to express the formula in terms of r is the same as saying that we should make r the subject of the formulae.

A = nr²

divide both sides by n

we have

A/n = nr²/n

A/n = r²

Since we are aske to express the formula interms of r and not r²,

we are going to square both sides

A/n = r²

√A/n = (r²) ²

√A/n = r

therefore

r = √A/n