SSC GD Constable 15 Feb 2019 Shift 3 Paper

Question : 54 of 100

Marks: +1, -0

Water in a canal 3 m wide and 1.2 m deep,is flowing with the velocity of 10 km/h. how much area (in hectares) will it irrigate in half an hour, if 9 cm of standing water is needed?