D and E are points on the sides AB and AC respectively of a triangle ABC such that DE parallel BC.(1) If AD=3.6cm,AB =10 cm, and AE=4.5cm, find EC and AC. (2) If AB=13.3cm, AC=11.9cm, and EC=5.1cm, find AD. (3) If AD/DB=4/7 and AC=6.6cm, find AE. (4) If AD/AB=8/15 and EC=3.5cm, find AE.
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