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Find the radius (to the nearest hundredths) of a circle with an area

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1 Answer

The area of a circle is given by:
 
Area = (pi)*(Radius2)
 
Where pi = 3.14159...  You need to solve for the Radius:
 
Area/pi = Radius2               [Divided both sides of the equation by pi]
 
√(Area/pi) = Radius            [Took the square root (√) of both sides]
 
Plug in the values for Area (432 cm2) and pi (3.14159) into the formula above to compute the value of the Radius.