Area of a Circle
Pi x Radius2
The area of a circle is given by the formula:
A = πr^2
where A is the area of the circle, r is the radius of the circle, and π is a mathematical constant approximately equal to 3.14159.
To find the area of a circle, simply square the radius of the circle and multiply that number by π. For example, if the radius of a circle is 5 cm, then the area of the circle can be calculated as follows:
A = π(5cm)^2
A = π(25cm^2)
A = 78.5398 cm^2 (rounded to four decimal places)
Therefore, the area of the circle with radius 5 cm is approximately 78.5398 cm^2.
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