Respostas

2014-08-24T18:05:50-03:00
Se x=10cm e y=28cm
2x=20cm ---> 20 + 10 +10 + 28= 68cm

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A melhor resposta!
2014-08-24T18:13:31-03:00
X = 10 cm
y = 28 cm

2x = 2(10) = 20 cm
x = 10 cm
y = 28 cm

2x + x + x + y = 20 cm + 10 cm + 10 cm + 28 cm = 68 cm

Resposta : 68 cm
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