For elevating 6.5dcm of a low land with length of 48m and breadth of 31.5m , it is decided that the soil will be collected by scooping a hole in a nearby land with a length of 27m and breadth od 18.2m, let us calculate the depth of the hole in the metre.

Half of the cuboidal water tank with length of 2.1 m and breadth of 1.5 m is filled with water. If 630 lt of water is poured more into the tank, then let us calculate and write the depth that will be increased by.

The length and breadth of a rectangular field of the village are 20m and 15 m respectively.For the construction of pillars in the 4 corners of that field 4 cubic holes having the depth of 4 m are dug out and the soils removed are dispersed on the remaining land. Let us calculate and write the height of the surface of the field that is increased by.

There were 800L, 725L and 575 L kerosene oil in 3 kerosine oil drums of the house. The oil of these 3 drums is poured into a cubical pot and for this, the depth of the drum becomes 7dcm.If the ratio of the length and breadth of the cuboidal pot is 4:3 then let us write by calculating the length and breadth of the pot.

If the depth of the cuboidal pot would be 5 dcm, let us calculate whether 1620 L oil can be kept or not in that pot.

The daily requirement of water of 3 families in our 3 storeyed flat are 1200L,1050L and 950L respectively. After fulfilling these requirement in order to put up a tank again and to deposit to store 25% of the required water, only a land having a length of 2.5m and breadth of 1.6m has been poured. Let us calculate the depth of tank in metre that should be made.

If the breadth of the land would be more by 4 dcm, then let us calculate the depth of the tank to be made.