The area of a circle is modeled by the equation, a=pi r 2. rewrite the equation in terms of the circle’s radius, r. in your final answer, include all of your calculations.

r = √(A/π)

Step-by-step explanation:

A = πr²

A/π = r²

±√(A/π) = r

You can't have a negative radius, so just keep the positive answer.

√(A/π) = r

Step-by-step explanation:

First off, the area of a circle should be pi times r squared, not r times pi squared. I will do my math using this correction.

 If A = (pi)r^2 then first we can divide both sides by pi, leaving

A/pi = r^2

 To solve for r, we need to take the square root of both sides, leaving

sqrt(A/pi) = r

 or

r = sqrt(A/pi)

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*

c

step-by-step explanation: