Find the length of the radius of the given circle.

Question

(x - 5)2 + (y + 3)2 = 25

Answer 1

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