# How do you write an equation for a circle with center (5,5) with a radius of 7?

##### 1 Answer

Jul 24, 2016

#### Explanation:

The equation of a circle with centre

#(x-h)^2+(y-k)^2=r^2#

So in our example, the equation of the circle can be written:

#(x-5)^2+(y-5)^2=7^2#

graph{((x-5)^2+(y-5)^2-7^2)((x-5)^2+(y-5)^2-0.04)=0 [-18.09, 21.91, -5.76, 14.24]}