A = πr^2 r = d/2 5 * 5 * π (pi) = 78,5398163 A = 78,5398163
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The area of a circle with a diameter of 10 centimeters is: 78.54 cm2
The area of a circle whose diameter is 10 cm is: 78.54 cm2
The area of a circle is A = pi times diameter² / 4. Given diameter d = 10 inches. Area A = 78.5398 inches².
A circle that has an area of 78.5 square feet has a diameter of 10 feet.
Using 3.14 as Pi the area of circle is: 78.5