Question

Water in a canal 5.4 m wide and 18 m deep is flowing with a speed of 25 km per hour how much area can it irrigate in 40 minutes if 10 cm of standing water is required for irrigation

Answer 1

Answer:

Step-by-step explanation:

b= 5.4 m

h=1.8m

v= 25 km/h

therefore, l=25km per hour

therefore water that would be flowing in 40 minutes=40*25/60=50/3km=50000/3m

area of irrigation= area water flowing in 40minutes

volume of water which irrigates the land= volume water flowing from canal in 40 minutes

and 10 cm or 1/10 m of standing water is required for irrigation

therefore,

l*b*h=L*B*H

l*b*1/10=50000/3*5.4*1.8

l*b=300000*5.4

l*b=16200000sq. m

therefore, area to be irrigated when 10 cm of standing water is required=16200000sq. m

hope it helps!!!