Respuesta:
[tex]2x + x + 2x + x = 30 \: cm \\ 6x = 30 \: cm \\ x = \frac{30 \: cm}{6} \\ x = 5 \: cm \\ a = bh \\ a = 2(5 \: cm)(5 \: cm) \\ a = 50 \: {cm}^{2} [/tex]
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Respuesta:
[tex]2x + x + 2x + x = 30 \: cm \\ 6x = 30 \: cm \\ x = \frac{30 \: cm}{6} \\ x = 5 \: cm \\ a = bh \\ a = 2(5 \: cm)(5 \: cm) \\ a = 50 \: {cm}^{2} [/tex]