Q34 of 56 Page 13

Water in a canal, 5.4 m wide and 1.8 m deep, is flowing with a speed of 25 km/hour. How much area can it irrigate in 40 minutes, if 10 cm of standing water is required for irrigation?(CBSE 2017)

Speed of flowing water = 25 km/hour


Length of flowing water in 40 minutes


As 1 km = 100 m



Volume of flowing water in 40 minutes = length × breadth × height



Irrigated area in 40 minutes


Length of standing water = 10 cm = 0.1 m


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