allerySecants P,A,B and P,C,D have PA=3,PB=12,PC=4 cm in those orders. CD?
A5 cm
B6 cm
C9 cm
D8 cm
Answer & Solution
Correct answer: A. 5 cm
The secant products give PD=3×12/4=9 cm, leaving CD=9−4=5 cm.
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