A wall of length 25m , width 60 cm and height 2m is to be constructed by using
bricks , each of dimensions 20cm x 12cm x 8cm.How many Bricks will be needed?
Answers
DIMENSIONS OF WALL=25m*2m*60cm
THEREFORE VOLUME OF WALL=2500*200*60
=30,00,000cm³
DIMENSIONS OF BRICKS=20*12*8
THEREFORE VOLUME OF EACH BRICK=1920cm³
THEREFORE NUMBER OF BRICKS NEEDED=3000000/1920=300000/192=1562.5
bricks estimate it to 1563.
THEREFORE 1563 BRICKS ARE NEEDED TO MAKE THE WALL .
The number of bricks required to construct the wall is 15625.
Given :
Length of the wall = 25m
Width of the wall = 60cm
Height of the wall = 2m
Length of the Brick = 20cm
Width of the Brick = 12cm
Height of the Brick = 8cm
To Find :
The number of bricks needed to construct the wall
Solution :
Formula to calculate volume of a cuboid of length L, Width B and height H,
Volume = L * B * H
Volume of Wall (Vw) = Length of wall * Width of wall * Height of wall
= 25m * 60cm * 2m
= 2500cm * 60cm * 200cm
= 300 * 10^5 cm^3
Volume of Brick (Vb) = Length of brick * Width of brick * Height of brick
= 20cm * 12cm * 8cm
= 2500cm * 60cm * 200cm
= 1920 cm^3
Number of Bricks required ( n )
= Volume of Wall / Volume of Brick
= Vw / Vb
= ( 300 * 10^5 ) / 1920
= 30000000 / 1920
= 15625
Hence, the number of bricks required of the given dimension to construct a wall of the given dimension is 15625.
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