Square root (Area/pi) to get the radius
Then 2xRadiusxPi= Circumference
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Times length times width
Area = Circumference squared divided by 4pi.
When the shape is a circle, then the perimeter is called"circumference".The circumference IS the perimeter of a circle.
circumference of a circle = 2*pi*radius or pi*diameter
Area of a circle = 3.14 * r2 Thus, radius, r = root of ( Area of a circle / 3.14 ) --------- equation 1 Circumference of circle = 2 * 3.14 * r Therefore, from (equation 1), Circumference = 2 * 3.14 * root of ( Area of a circle / 3.14 ). In a nutshell, first find the radius and then the circumference.