As shown in the figure, if the perimeter of the three figures is equal, then a: B: C=______ ．

4b + a = 6a, that is, 4b = 5a, that is, B is 54 of a; 6A = 5C, that is, C is 65 of a; a: B: C = A: 54a: 65A = 20:25:24

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1. As shown in the figure, it is known that the perimeter of three figures is equal, so find a: B: C. why
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