# What is the equation of a circle with center #(2, -3)# and radius of #3#?

##### 2 Answers

Jul 25, 2016

#### Explanation:

The eqn. of a circle with centre

Accordingly, the reqd. eqn. is,

Jul 25, 2016

Equation of standard circle i.e circle having its centre at origin is

here r is the radius

Now if the circle does not have its centre at origin

then

if it is having its cente at poin (X1,Y1)

then

equation of circle can be written as

then for now for above question points are (2,-3)

and radius is 3

then equation is