15). The area of a circle with radius r is given by the formula A=πr2. If a circle has area 169π square inches, what is the radius?

The radius is ________inches.

(Simplify your answer. Type an integer or a fraction.)

Thank you for the opportunity to help you with your question!

A=πr^2, but A=169π

169π=πr^2, then pie will cancel out to get;

169=r^2

finding the square root on both sides, we have;

sqrt(169)=r

r= 13 inches

Secure Information

Content will be erased after question is completed.

Enter the email address associated with your account, and we will email you a link to reset your password.

Forgot your password?

Sign Up