Question

8 Water in a canal, 6 m wide and 1.5 m deep, is flowing with a speed of 10 km/h. How muc
area will it irrigate in 30 minutes, if 8 cm of standing water is needed?
nine of internal diameter 20 cm from a canal into a cylindrical tank.​

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

Now,

Volume of water in canal = Volume of area irrigated

Volume of water in canal = Area irrigated × Height

5000×6×1.5 = Area irrigated × 100

Area irrigated =

5000×6×1.5/100

Area irrigated = 562500 m

Area irrigated = 56.25 hectares

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