Question

Definition of circle ​

Answer 1

$\mathtt{ \purple{ \underline{ \huge{ \fbox{ \: Answer : \: \: }}}}}$

A circle is the set of all points in plane that are equidistant from a fixed point in the plane

The fixed point is called centre of the circle

The distance from the centre to a point on the circle is called the radius of the circle

It is denoted by r

The area of circle is given by

$\mathtt{ \large\underline{ \fbox{Area \: of \: circle = \pi {(r)}^{2} }}}$

The perimeter of circle is given by

$\mathtt{ \large\underline{ \fbox{Perimeter \: of \: circle = 2\pi(r)}}}$