Question

Find number of bricks measuring 25cm, 12.5cm, 7.5 cm required to construct a wall of 24m long 20 m high50m thick

Answer 1

Hii !!


Length of wall ( L ) = 24 m



Breadth of wall( B ) = 20 m


And,

Height of wall ( H ) = 50 m

Therefore,


Volume of wall = ( Length × Breadth × Height ) = ( 24 × 20 × 50 ) m³ = 24000 m³ = 2400000 cm³.



Length of bricks ( L1 ) = 25 cm



Breadth of bricks ( B1 ) = 12.5 cm


And,

Height of bricks ( H1 ) = 7.5 cm




Therefore,


Volume of bricks = ( L1 × B1 × H1 ) = ( 25 × 12.5 × 7.5 ) cm³ =2343.75 cm³.





Therefore,

Number of bricks that require to make the wall = Volume of wall / Volume of each bricks = 2400000/2343.75 = 1024.

Answer 2

hey
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area of wall =( l×b×h) 24×20×50=24000= 24000×100cm^3 =2400000cm^3

area of brick =(l×b×h) 12.5×7.5×25=2343.75

req no of bricks = area of wall/ area of brick

24000,00/2343.75=10,240

hence, ans is 1024

hope helped
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