Iwill give brainlist if i get enough answers how do i find the radius someone me

r=7

Step-by-step explanation:

We have the equation

(x+5)^2 + (y+8)^2 =

We know that this is equal to the radius squares

(2+5)^2 + (-8+8)^2 = r^2

We know a point  on the circle (2,-8)

Substitute this point into the equation

(2+5)^2 + (-8+8)^2 = r^2

(7)^2 + (0)^2 = r^2

7^2 = r^2

The radius is equal to 7

each side has a different length.  

step-by-step explanation: