78.50
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Area of Circle = pi x r^2 = pi x 25 x 25 = pi x 625 If you need a decimal answer multiply 625 x 3.14159
25 x pi sqft
pi X 25 = 25 pi ( Algebraic. However, if you approximate pi to 3.14159 Then 3.14159 x 25 = 78.53975 If you approximate pi tp 3.13 Then 3.14 x 25 = 78.5
Area = (pi) x (Radius)2Radius = sqrt(area/pi)Circumference = (2 pi) x (Radius) = (2 pi) x sqrt(area/pi)Circumference = 2 x sqrt(pi x area)
The circumference is Pi x r x r.... In THIS case it's .25 x .25 x Pi... which equals 0.19634375