SOLUTION: The area of a circle is 9π in². What is the circumference, in inches? Express your answer in terms of piπ.

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Question 1210579: The area of a circle is 9π in². What is the circumference, in inches? Express your answer in terms of piπ.
Found 2 solutions by n2, josgarithmetic:
Answer by n2(66)   (Show Source): You can put this solution on YOUR website!
.
The area of a circle is 9π in². What is the circumference, in inches? Express your answer in terms of piπ.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

Use the formula for the area of a circle

     =   in^2.


where  'r'  is the radius of the scuare.

From this equation

         = 9,  r =  = 3.


Then the circumference of the circle is

    circumference =  =  =  inches.


ANSWER.  The circunference of the circle is   inches.

Solved.



Answer by josgarithmetic(39749)   (Show Source): You can put this solution on YOUR website!
Area of circle being means and radius is 3.

To find circumference, .
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