En un rectangulo de perimetro 38 cm la base es de 3 cm mas larga que la altura . calcular la longuitud de la base
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Perimetro = 38cm
Altura = x
Base = x + 3
Formula.
Perimetro del rectangulo = 2 * Base + 2 * Altura
38 = 2 * (x + 3) + 2x
38 = 2x + 6 + 2x
38 = 4x + 6
38 - 6 = 4x
32 = 4x
32/4 = x
8 = x
La base = x + 3 = 8 + 3 = 11cm
Respuesta.
La base mide 11cm