Question

A canal 2m deep and 10m wide is flowing at the rate of 3km per hour. How many hectares will it irrigate 1hour if 10 cm of water is required​

Answer 1

Answer:

Canal is in the shape of cuboid , where,

Breadth =6 m

Height =1.5 m

Speed of canal =10 km/hr

Length of canal in 1 hour =10 km

Length of canal in 60 minutes =10 km

Length of canal in 1 minute =

60

1

×10 km

Length of canal in 30 minute =

60

30

×10=5km=5000 m

Now,

Volume of canal = length×breadth×height

= 5000×6×1.5 m

3

Now,

Volume of water in canal = Volume of area irrigated

Volume of water in canal = Area irrigated × Height