Respuesta:
Re fácil :D
Explicación paso a paso:
800 = (30 + B )x 20 /2
800 = (30 + B)x 10
80 = 30 + B
B = 50 cm
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Verified answer
Respuesta:
Re fácil :D
Explicación paso a paso:
800 = (30 + B )x 20 /2
800 = (30 + B)x 10
80 = 30 + B
B = 50 cm