Question

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

Answer 1

vol

=45000______________1

vol

=a*8/10__________________2

from 1 and 2

a*8/10=45000

a=562500