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Can someone help me with this please

Can someone help me with this please-example-1
User Foxygen
by
7.3k points

1 Answer

3 votes

Answer:

15.9

Explanation:

Draw CE and CF

Note ∠ECD = ∠CFD and ∠D = ∠D

so ΔCED ~ ΔFCD

then ED : CD = CD : PD

CD² = ED x PD = 12 x (9 + 12) = 252

CD = 15.9

User Ruben Vreeken
by
6.9k points