2h + 2(h + 18cm) = 67cm | 4h + 36cm = 67cm.
67cm - 36cm= 31/4 = 7.75 cm
b = h + 18cm | 7.75 + 18 = 25.75cm
7.75 + 7.75 + 25.75 + 25.75 = 67cm
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Respuesta: 7.75 cm x 25.75cm
Explicación:
2h + 2(h + 18cm) = 67cm | 4h + 36cm = 67cm.
67cm - 36cm= 31/4 = 7.75 cm
h = 7.75cm.
b = h + 18cm | 7.75 + 18 = 25.75cm
b = 25.75cm
7.75 + 7.75 + 25.75 + 25.75 = 67cm