If 3.75 the circumference, then use the circumference formula to solve: πd=3.75; d=3.75/π
If 3.75 is the area, then use the area formula: πr^2 = 3.75; r=√3.75/π; d=2r=2*√3.75/π
If 3.75 is the radius, the d= 2r= 7.5
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The formula for an area of a circle is A = pi r2 . if a circle has a diameter of 375 inches the radius is 187.5 inches. from the formula we get A = pi (187.5)2 A = 35156.25 pi The area is approx 110446.62 square inches.
The circumference of a circle with a 20.5 inch diameter is 64.4 inches.
The area of a circle that has an 8.5 inch diameter is: 56.75 square inches.
A 72-inch diameter circle has an area of: 28.3 square feet.
The approximate area of a circle with a 12-inch diameter is: 113 square inches.