Area of the circle: pi*11^2 = 121*pi square units
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Area of the circle: pi*11^2 = 121*pi square units
A circle with a radius of 11 inches has an area of 380.13 square inches.
The area is 1,520.53 inches2
Yes. The area is proportional to the square of the radius. If the radius becomes smaller, so does the area.
The area of a regular pentagon with a radius of 7 is 10.1716. If the radius was 5, the area would be 7.26543.