The length of the radius of two circles are 5 cm and 3 cm. The distance between their center is 13 cm. Find the length of the tangent who touches both the circles?
radius of circle A = 5 cm,
radius of circle B = 3cm,
distance between the centers of the two circles = 13 cm.
Length of common tangent
Construct line segment
By Pythagorean theorem, we know that
Hence, length of common tangent