Q19 of 47 Page 1

Water in a canal, 6m wide and 1.5m deep, is flowing at a speed of 4 km/hr. How much area will it irrigate in 10 minutes, if 8 cm of standing water is needed for irrigation?

Length of the canal = 4km/hr × hr [Distance = Speed × Time]

⸫ Length =


Given, width = 6 m, depth = 1.5 m


Volume of water flowing in the canal = l × b × h = × 6 × 1.5


= 6000 m3


Height of standing water = 8 cm = m


⸫ Area for irrigation =


=


= 75000 m2


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