a water tank is in the shape of a cuboid, measuring 150cm by 100cm by 80cm.

1) how many litres would the tank hold?

2)the tank is initially empty and water flows into it from a pipe. the cross sectional area of the pipe is 2.1cm'2 and the water flows along the pipe at a rate of 35 cm/s. calculate the volume of water flowing from the pipe in 1 second, find the time taken to fill the tank??