Using 3.14 as Pi the area of circle is: 200.96
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Well, darling, if the diameter of a circle is 16cm, then the radius would be half of that, which is 8cm. To find the area of a circle, you use the formula A = πr^2, so plug in 8 for the radius and you get an area of 64π square centimeters. So, there you have it, sweet cheeks, the area of the circle is 64π square centimeters.
64 pi sqcm
16cm
256 pi cm2
The diameter is twice the radius and so 2 times 16 = 32cm
The area of a circle with a diameter of 9.4 m is: 69.4 m2