Question

26. In
ABC, | ABC = 90°, BDI AC. If BD = 8 cm, AD = 4 cm, find CD
and AB.
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Answer 1

Answer:

1. according to pythagores theorem AB^2=BD^2+AD^2
2. 8^2+4^2=AB^2
3. ÀB=80^1/2=4×5^1/2

ABD