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In a A B C , D and E are points on t...

In a ` A B C` , `D` and `E` are points on the sides `A B` and `A C` respectively such that `D E B C` If `A D=6\ c m` , `D B=9\ c m` and `A E=8\ c m` , find `A C` . (ii) If `(A D)/(D B)=3/4` and `A C=15\ c m` , find `A E` . (iii) If `(A D)/(D B)=2/3` and `A C=18\ c m` , find `A E` .

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