Well, honey, if the circumference is 72.22 inches, then the radius is 72.22 / (2 * π) ≈ 11.5 inches. And if you want to know the area of a circle with that radius, it's π * (11.5)^2 ≈ 415.62 square inches. Math doesn't have to be boring, darling!
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Circumference = 72.22 inches => radius = circumference/(2pi) = 11.49 inches and so area = piradius2= 415.05 sq inches.
Circumference = 314 inches implies radius = 49.97 inches and so area = 7846.02 sq inches (approx).
First we have to find the radius: 2*pi*radius = 18*pi Divide both sides by 2*pi to find the radius: radius = 9 inches Area of a circle = pi*radius2 Area = pi*92 = 81pi or 254.4690049 square inches
Circumference is 2π times the radius. So, for 14π the radius is 7. Area is πr2, so the area of a circle with radius 7 is 72π, or 49π (153.93).
Circumference = 28.2743339 inches. Area = 63.6172512 square inches.
If you have the circumference: circumference = (pi) * diameter diameter = circumference / (pi) If you have the area: area = (pi) * radius * radius radius = square_root(area / pi) radius = diameter / 2 diameter = 2 * square_root(area / pi)