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OpenStudy (anonymous):
The area of a circle is 10π^2. What is the circle's diameter. Round to the nearest hundred of the centimeter. HELP!!!!!!
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OpenStudy (anonymous):
Area of a Circle formula = πr^2 Given are of Circle = 10π^2 Equate both values, 10π^2 = πr^2 Cancel pi 10π = r^2 SquareRoot(10pi) = r Diameter = 2*SquareRoot(10pi) = 2*SquareRoot(10*3.14) = 2*SquareRoot(31.4) Diameter = 2*5.603 = 11.206 cm
OpenStudy (anonymous):
Thank you so much! :)
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