The area of a circle is A = pi times diameter² / 4. Given diameter d = 10 inches. Area A = 78.5398 inches².
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Area of circle: pi*10^2 = 100*pi square inches
The area of a circle with a diameter of 10 centimeters is: 78.54 cm2
The circumference of a 10 inch circle is: 31.416 inches(circumference = diameter x pi).
The area of a circle whose diameter is 10 cm is: 78.54 cm2
Area of a circle = pi*radius2 measured out in square unitsfor pi use this number 3.14159and remember the radius of a circle = half the diameter.----------------------------------------------------------------Thus a circle with a 10 inch diameter would have an area of:Radius = diamiter/2, which is 10/2= 53.14159 * (5*5) = 78.53975 square inches