Using 3.14 as Pi the area of circle is: 379.94
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The area of a circle is calculated using the formula A = πr^2, where A is the area, π is a constant approximately equal to 3.14159, and r is the radius of the circle. In this case, the radius is 11 cm. Plugging this value into the formula, we get A = π(11)^2 = 121π cm^2, which is approximately 380.132 cm^2.
Area of circle: pi times 11 squared = 380.133 square cm rounded to 3 decimal places
Area of a circle in square cm = pi*radius squared
A circle with a radius of 19 cm has an area of 1,134.11 square cm.
A circle with a radius of 25 cm has an area of 1,963.5 square cm.
A circle with a radius of 2 cm has an area of 12.57 square cm.
A circle with a radius of 4 cm has an area of 50.27 square cm.