A rectangular reservoir is 120 m long and 75 m wide. At what speed per hour must water flow into it through a square pipe of 20 cm wide so that the water rises by 2.4 m in 18 hours
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A rectangular reservoir is 120 m long and 75 m wide,
water flow into it through a square pipe of 20 cm wide so that the water rises by 2.4 m in 18 hours
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