Determine the time taken to irrigate a strip of land 400 m2 in area and with a discharge through supply ditch of 70.5 m3/hr. The irrigation capacity of the soil is taken as 0.05 m/hr and the average depth of the water flowing over the border strip is 0.1 m.
1
35 minutes
2
45 minutes
3
40 minutes
4
30 minutes