22.52 x pi = 506.25pi sq miles. Taking pi as 355/113 gives 1590.43 sq mi
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A 45-foot diameter circle has an area of 1,590.4 square feet.
A 45-foot circumference circle has an area of: 161.1 square feet.
Using 3.14 as Pi the area of circle is: 6358.500000000001
It is: 45*29 = 1305 square cm
Area = 3*45 = 135 square feet. Perimeter = 2*(3 + 45) = 2*48 = 96 feet.