Answer:
Explanation:
The figure drawn is a circle. It's center is a (-5,4) just the opposite of what is in the brackets. I'm giving you this information just to be complete.
For a circle the radius is found using the lone number on the other side of the equal side -- in this case 121
The radius is the square root of that lone number.
radius^2 = 121
sqrt(radius^2) = sqrt(121)
radius = 11