A Cuboid dimension 14cm*8cm*7cm is completely emerged in cuboid trough with side 28cm containing water 20 cm.what will be the height of water after emerging?

Answer 1

apparently the "cuboid" with side 28 is in fact a cube. The cuboid is submerged, not "emerged".

the volume of the cuboid is 14*8*7 = 784 cm^3

since 28*28*1 = 784, the water rises 1 cm, so the height after is 21 cm.