Find the length of the common chord of two circles x2+y2=25x^2 + y^2 = 25x2+y2=25 and (x−3)2+y2=16(x-3)^2 + y^2 = 16(x−3)2+y2=16.
4.54.54.5
6.46.46.4
7.27.27.2
8.08.08.0