# What are the coordinates of the center and the length of the radius of the circle represented by the equation #x^2+y^2-4x+8y+11=0#?

##### 1 Answer

Jun 2, 2017

Center

#### Explanation:

To find the radius and center we have to transform the equation to

#(x-a)^2+(y=b)^2=r^2#

From the transformed equation we can see that the circle's center is