Question

how many bricks of 25cm×15cm×6cm are required to make a wall 5m long,2m height and 50 cm thick if 10 percent place is occupied by cement?​

Answer 1

Answer:

20 bricks are required.

Step-by-step explanation:

Volume of wall = 100*100(5*2*0.5)cm

                        =50000 cm

10% of space is occupied therefore:

                   =50000-(10/100*50000)

                   =45000 cm

Volume of brick = 25*15*6

                           =2250

On dividing we get : 45000/2250=20

Ans. 20 bricks are required.