This seems really basic to everything else I see posted... hopefully I can get some help.. asap Thank you!

A circular window has an area of 10 square feet. Find the circumference of the window.

The area of a circle is given by:


The circumference of a circle is given by:


Find the radius from the given area, then find the circumference.

thank you.. I guess I need a little more help, cause I have that info, I am not sure how to do that part though.

I have the area at 10 ft ^2
so how do I figure the circumference with that? I guess first figure out the radius? and how do I do that?

thank you so much! really.. sorry for needing more help... hope you can help me!

Solve for r:

Then substitute the value for r into .

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Thank you.. could you check this and see if it is correct?
r^2=10/pi
3.183098862=r^2

20=2(pi)(3.183098862)
so the cirucumference is 20? is that right?

You substituted instead of , which is wrong.