In △ ABC, D, e and F are the middle points of the three sides respectively, and the area of △ DEF is 4cm & sup2;, so the area of △ ABC can be calculated

In △ ABC, D, e and F are the middle points of the three sides respectively, and the area of △ DEF is 4cm & sup2;, so the area of △ ABC can be calculated

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What is PS: 4cm & sup2