[" 8.Water in anal,"6m" wide and "1.5m" dec "p" ,is flowing wilh a speed of I "0km/h" .How nuch "],[" area will it irrigate in "30" minules,if "8cm" of standing wates is necded? "],[" 9.A farmer conncets a pipc of internal diamctes "20cm" from a canal into a cylindrical tank in "]