Question

Water in a canal 6m wide and 1.5m deep is flowing with a speed of 10km/hr. How much area will it irrigate in 30min,if 8cm of standing water is needed?

Answer 1

Depth = 1.5 m, width = 6 m, height of standing water = 0.08 m

Speed 10km/hr
1 hour =10 km
60min =10 km
1 min = 1/60×10
30 min=30 /60 ×10 =5 km
Ans =5km= 5000m