What is the length of PC¯¯¯¯¯? Enter your answer as a decimal in the box. Round your final answer to the nearest hundredth.

_ cm

Description of drawing:

Circle A with a tangent and a secant. Point B at 11 o clock, point C at 12 o clock, and point D at 7 o clock are on the circle. Point P is at 11 o clock outside of the circle. Tangent P C and secant B D intersect at point P. Segment P B is labeled as 4 centimeters. Segment B D is labeled as 52 centimeters.