Math
posted by Smithen .
Find the length of the radius of the given circle.
(x  5)2 + (y + 3)2 = 25

The standard equation of a circle with center C ( h , k ) and radius r is as follows:
( x  h )^ 2 + ( y  k )^ 2 = r ^ 2
In your case r = sqrt( 25 ) = + OR  5
Length can't be negative so r = 5