Area of a Circle
The area of a circle is the measure of the entire region enclosed by the outer boundary (circumference) of a circle
The area of a circle is the measure of the entire region enclosed by the outer boundary (circumference) of a circle. It is commonly denoted by the symbol A.
The formula to calculate the area of a circle is:
A = πr^2
where A is the area, π (pi) is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle. The radius is the distance from the center of the circle to any point on its circumference.
To find the area of a circle, square the radius and multiply it by pi. This formula works for any size circle, large or small.
For example, if you have a circle with a radius of 5 units, you can calculate its area as follows:
A = π(5^2) = π(25) = 25π
If you need a numerical value, you can use an approximation of pi, such as 3.14, to estimate the area. In this case, the area of the circle with a radius of 5 units would be approximately:
A ≈ 3.14(25) = 78.5
Therefore, the area of the circle is approximately 78.5 square units.
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