In △ ABC and △ def, ABDE = BCEF = CAFD = 23, the perimeter of △ ABC is 13cm, then the perimeter of △ DEF is 13cm______ .
The results show that ∫ ABDE = BCEF = CAFD = 23 ∫ ABC ∫ def, and the similarity ratio is 2:3, the ratio of ∫ ABC's perimeter to ∫ def's perimeter is 2:3, and ∫ ABC's perimeter is 13cm. If ∫ def's perimeter is xcm, then 2:3 = 13: X, the solution is x = 392, so ∫ def's perimeter is 392cm
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