Question

how many bricks will be required to build a wall 8m long ,6m high, and 22.5 cm thick,if each brick measures 25cm by 11.25 cm by 6 cm?

Answer 1

Given ;- Dimensions of wall

Length ;- 8m

breath ;- 6m

height;- 22.5 cm

Dimensions of one Brick ;-

Length ;- 25cm

Breath ;- 11.25 cm

height ;- 6 cm

Volume of One Brick ;- =lbh
                             
 =25*11.25*6
                                 
=1687.5cm2

Volume of wall ;- 800cm*600cm*22.5cm
                           
  =10800000cm2

Number of bricks required to make a wall =


10800000/1687.5
                               

 = 6400 bricks


Thanks me Later ❤️

Answer 2

dimentions of wall
l=800cm
b=22.5cm
h=600cm
area=l×b×h
=800×22.5×22.5
10800000
convert in m=10800000/100
=108000
dimentions of each brick
l=25cm
b=11.25cm
h=6cm
area=l×b×h
25×11.25×6
1687.6
therefore,dimentions of wall/dimentions of brick=no. of bricks
10800000/1687.6
6400bricks