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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=4` , `A E=8` , `D B=x-4` , and `E C=3x-19` , find `x` (ii) If `A D=8\ c m` , `A B=12 c m` and `A E=12\ c m` , find `C E` . (iii) If `A D=4\ c m` , `D B=4. 5\ c m` and `A E=8\ c m` , find `A C` .

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