RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 21. Mensuration-II (Volumes and Surface Areas of a Cuboid and a Cube)

Subject: Maths - Class 8th

Q. No. 11 of Exercise 21.2

Listen NCERT Audio Books to boost your productivity and retention power by 2X.

11

How many bricks each of size 25 cm× 10 cm× 8 cm will be required to build a wall 5 m long, 3 m high and 16 cm thick, assuming that the volume of sand and cement used in the construction is negligible?

Given,


Size of one brick = 25cm × 10cm × 8cm


Dimensions of wall = 5m × 3m × 16cm = 500 cm ×300 cm ×16cm


So,


Number of bricks needed to make the wall =


Chapter Exercises

More Exercise Questions