A circle is a round figure that consists of points equidistant from a certain or fixed point from a central point of the circle. A central point from where the radius is drawn is known as the center point of a circle. The radius of a circle is the distance from the center of a circle to any point on circle. If you place two radii end-to-end in a circle, you would have the same length as one diameter. Thus, the diameter of a circle is twice as long as a radius. The area of circle is the number of square units inside that circle. A circle has a maximum possible area for a given perimeter and the minimum possible perimeter for a given area. The perimeter C of circle is called the circumference.

The A**rea of a Circle Formula** is given as,

r is the radius of the circle.

d is the diameter of the circle.

C is the circumference of the circle.

### Solved Examples

**Question 1:**Find the area of the circle whose radius is 8 cm?

**Solution:**

Radius of a circle = r = 8 cm

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