Skip to content

## Q- Let us write by calculating how many cubic decimeters of concrete material will be necessary to construct two cylindrical pillars each of whose diameter is 5:6 decimeter and height is 2.5 meter.Let us write by calculating the cost of plastering the two pillars at ₹ 125 per square meter.

Chapter: Rectangular Parallelepiped or Cuboid

## Q- If a gas cylinder for fuel purpose having the length of 7.5 dcm and the length of the inner diameter of 2.8 dcm carries 15.015 kg of gas, let us write by calculating the weight of the gas of per cubic dcm.

Chapter: Rectangular Parallelepiped or Cuboid

## Q- The daily requirement of water of three families in our three-storyed flat are 1200 lit, 1050 lit. and 950 lit respectively. After fulfilling these requirements in order to put up a tank again and to deposit to store 25% of the required water, only a land having the length of 2.5 m and breadth of 1.6 m has been procured. Let us calculate the depth of the 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.

Chapter: Rectangular Parallelepiped or Cuboid

## Q- The depth of a cuboidal pond with length of 20 m and breadth of 18.5 m is 3.2 m. let us write by calculating, the time required to irrigate whole water of the pond with a pump having the capacity of irrigate 160 kilos lit. water per hour. If that quantity of water is poured on a paddy field with a ridge having the length of 59.2 m and breadth of 40 m. then what is the depth of water in that land- let us write by calculating it, [ 1 cubic metre = 1 kilo litre ]

Chapter: Rectangular Parallelepiped or Cuboid

## Q- There were 800 lit, 725 lit and 575 lit. Kerosene oil in 3 kerosine oil Drums of the house. The oil of these three drums is poured into a cuboidal pot and for this, the depth of oil in drums 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, then let us calculate whether 1620 lit. oil can be kept or not in that pot.

Chapter: Rectangular Parallelepiped or Cuboid

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

Chapter: Rectangular Parallelepiped or Cuboid

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

Chapter: Rectangular Parallelepiped or Cuboid

## Q- If the length, breadth and height of one packet of 1 gross Match box are 2.8 dcm and 0.9 dcm respectively, then let us calculate the volume of one Match box [1 gross= 12 dozen] But if the length and breadth of one Match box be 5 cm and 3.5 cm. then let us calculate and the height of it.

Chapter: Rectangular Parallelepiped or Cuboid

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

Chapter: Rectangular Parallelepiped or Cuboid

## Q- The height of Chandmari road is to be raised. So, 30 cuboidal holes with equal depth and of equal measure are dug out on both sides of the road and with this soil the road is elevated. if the length and breadth of each hole are 14m. and 8m. respectively and if the total quantity of soil required to make the road be 2520 cubic meter then let us calculate the depth of each hole.

Chapter: Rectangular Parallelepiped or Cuboid