3rectangular metal blocks,8 cm long, 6 cm wide & 5 cm high, were placed in an empty rectangular glass tank.water was then poured in until it reached a height of 10 cm. Another 5 similar blocks were put into the water so that it reached the brim of the tank. Assuming there was no loss in water,

find A. The volume of water in the tank at first
B. The height of the tank

so, what's the volume of one block?

ya gotta start somewhere, eh?