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2(X*2X + X*X + 2X*X) = 160
2(2X^2 + X^2 + 2X^2) = 160
2(5X^2) = 160
10X^2 = 160
X^2 = 16
X = Raíz cuadrada de 16
X = 4 R//.
imaginate el paralelepipedo, entonces su area ó superficie total será
2x*x + 2x*x + 2x*x + 2x*x + x*x + x*x = 160
2x² + 2x² + 2x² + 2x² + x² + x² = 160
10x² = 160 , simplificando decima
x² = 16 ---------> x = 4cm
ESTA ES LA RESPUESTA