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1 diametro= La mitad de un circuferencia (70 cm)
2 diametro= La circuferencia entera (1 vuelta)(70×2=140 cm)
3 Vueltas
3×140=420 cm
.5= media vuelta= 70 cm
420 cm+70 cm= 490 cm
70*PE*3.5=769.69