water level in a well was 20m below ground level. During rainy season, rainwater collected in different water tanks was drained into the well and the water level rises 5m above the previous level. The wall of the well is 1m20cm high and a pulley is fixed at a height of 80cm. Raghu wants to draw water from the well. Find the minimum length of the rope that he can use.
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the minimum length will 46 cm
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