Answer:
Length of the three measuring rods are 64cm, 80cm and 96cm.
The length of cloth that can be measured an exact number of times = LCM (64, 80, 96)
Using prime factorization,
64 = 26
80 = 24 × 5
96 = 25 × 3
LCM = 26 × 3 × 5
LCM = 960cm
∴ LCM = 9.6m
The length of the cloth = 9.6m.