Question 19
A cuboid fish tank is 90 cm long, 50 cm wide and 75 cm high, with water depth 45 cm. A brick of volume $18\ \mathrm{dm}^3$ is put inside. What is the new water depth in centimetres?
Editorial modelling note: the source answer assumes the object is fully submerged, with no water spilled.
Editorial modelling note: the source answer assumes the object is fully submerged, with no water spilled.