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What is the area to the nearest tenth of a square foot if the circumference of a circle is 16.5 feet?
Wiki User
∙ 14y ago
The area of a circle with radius r is A = pi.r^2.
The radius of a circle with circumference C is r = C/(2pi) since C=2.pi.r.
So the radius of a circle with circumference 16.5 feet is r = 16.5/(2pi) ≈ 16.5/(2x3.1416) ≈ 2.626 feet.
Thus this circle has area A = pi.r^2 ≈ 3.1416 x (2.626)^2 ≈ 21.7 square feet.
Wiki User
∙ 14y ago
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