Rearrange the formula A = πr^2 for r.

Answer 1

To rearrange the formula \( A = \pi r^2 \) for \( r \), follow these steps:

1. Divide both sides by \( \pi \): \[ \frac{A}{\pi} = r^2 \]

2. Take the square root of both sides: \[ r = \sqrt{\frac{A}{\pi}} \]

So, the rearranged formula for \( r \) is: \[ r = \sqrt{\frac{A}{\pi}} \]