Question

How many bricks of dimension 20cm*10cm*10cm are required to build a wall 12m*3m*30cm,if 10% of wall is comprised of mortar?

Answer 1

Answer:

first brick area=20×10×10=2000cm³

area of wall= 1200×300×30

=10800000 ×10/100

=1080000

area of wall/ area of brick

obtain 540 bricks required