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The area of a circle is calculated with the following formula: pi times radius squared. So, you have to divide the area (square metre value) by pi (approx 3.14) then take the square root of that division. This gives you the radius of the circle. Multiply by 2 to get the diameter.

Eg. 20 m2 divided by pi = approx 6.37

the square root of 6.37 = approx 2.52

muliply 2.52 by 2 = 5.04, which is the diameter of a circle with an area of 20 m2

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14y ago

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