Circumference Equals Diameter times Pi C = D x π D = 5 C = 5 x π C = 5π² or 15.7ft²
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the diagonal of the rectangle will be the diameter of the circle which equals 5 so the circumference will be 5pie or 15.70units.
Area = Pi multiplied by the radius squared Circumference = Pi multiplied by the diameter r = 10 in./2 = 5 in. A = (3.1415)(5 in.)(5 in.) = 78.54 in.2 C = (3.1415)(10 in.) = 31.42 in. Therefore, a small circle with a diameter of 10 inches has an area of about 78.54 inches squared and a circumference of about 31.42 inches.
2.5 x 2.5 x 3.14 = 19.625 sqft
Calculate half of 5 and the answer is 2.5. Then, 3.14 * 2.5 and the final answer is 7.85. ANSWER BY DEVON YOUNG, DO NOT CHANGE. COPYRIGHT.
The diameter is double the radius of a circle. So you get 5 inches for the diameter.