the area of a circle is 9 pie square meters. What is the radius of the circle? What is the circumfer

Algebra
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the area of a circle is 9 pie square meters. What is the radius of the circle? What is the circumference of the circle?

Sep 9th, 2015

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area of circle = pie* (radius)^2

  area of circle given as 9 pie,so

9 pie =  pie* (radius)^2

9 = (radius)^2

radius = 3


circumference = 2* pie*radius

                         = 2*pie*3

                         = 6 pie

                         = 6 π


radius of circle = 3

circumference of circle = 6 π = 6 pie



Please let me know if you need any clarification. I'm always happy to answer your questions.....thank you
Sep 9th, 2015

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Sep 9th, 2015
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