Q23 of 50 Page 1

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

Given speed of water = 4 km/hr


Length of canal, l



Given width, b = 6 m and height, h = 1.5 m


Required area


We know that volume of cuboid = lbh




= 75000 m2


∴ 75000 m2 will be irrigated in 10 minutes.


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