A rectangular cistern 60 cm long, 45 cm broad contains some water. A rectangular solid measuring 35 cm by 30 cm by 9 cm is immersed under water and rests at the bottom. Find by how much the water level rises in the cistern. Share with your friends Share 0 Rajat Sethi answered this Volume of displaced water=Volume of rectangular solid =l×b×h =35×30×9 cm3Let H be the water level rise in the cistern.Volume of rised water in cistern=Volume of displaced water⇒60×45×H= 35×30×9⇒H=35×30×960×45=3.5 cm 1 View Full Answer