Explicación paso a paso:
P = 20
20 = 2a + 2a/3 + 12
8 = 8a/3
3= a
Cada lado vale 3 , 15 , 2
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Explicación paso a paso:
P = 20
20 = 2a + 2a/3 + 12
8 = 8a/3
3= a
Cada lado vale 3 , 15 , 2