Area of a circle = pi times radius squared
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The diameter of a 28-square inch circle is: 5.971 inches.
Calculate the radius, which is simply 1/2 the diameter. Then use the standard formula for the area of a circle. ________________________________________________________________ The circle area = (pi) x diameter / 4 = 3.14 x 25/4 = 19.625 Sq inch
Using 3.14 as Pi the area of circle is: 1.7662499999999999
You can calculate the area of a circle with the formula: A = pi x radius2 If the 30 inches refers to the diameter, divide it by 2 to get the radius.
A circle whose diameter is 2 inches has an area of 'pi' square inches.3.142 in2 (rounded)