67. Water is flowing through a horizontal pipe of non uniform cross section.The speed of water is 30cm/sec at a place where pressure is 10cm .Calculate the speed of water at the
Ex 8.2, 1 (v) Class 10 - Evaluate (5cos^2 60° + 4sec^2 30° - tan^2 45)
احصل على سيارة اطفال بدريكسيون فارو، 67×30×43 سم مع أفضل العروض | رنين.كوم