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area = 250cm²
Largo = 12, 5cm
Area = Largo por Ancho
250cm² = 12,5cm * Ancho
250cm² / 12,5cm = Ancho
20cm = Ancho
Respuesta.
Opcion A
h = altura = lado a = 12.5 cm
b = base = lado b = ???
área = 250 cm ^2
a x b = 250 cm
12.5 cm x b = 250 cm ^2
b = 250 cm^2 / 12.5 cm
b= 20cm.
La alternativa A.