It's radius x radius x pi.
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2x3.14r
Area of circle = pi*(radius)2
Area of a circle = (pi) (R2)R = radius of the circle = 1/2 of its diameter
Some of the many applications that pi is used in geometry are as follows:- Finding the area of a circle Finding the circumference of a circle Finding the volume of a sphere Finding the surface area of a sphere Finding the surface area and volume of a cylinder Finding the volume of a cone
The area of a circle is measured in square units. The formula is: pi*radius2