Question

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

Answer 1

Heya..

Since Volume of wall = l*b*h

= 8m * 6m * 22.5cm

= 800cm * 600cm * 22.5cm

= 10,800,000 cm^3

And ..

Volume of each brick = 25cm* 11.25cm * 6cm

= 1,687.5 cm^3

Hence number of bricks

= Volume of wall / Volume of each brick

= 10,800,000 / 1,687.5

= 6,400

Hope it's helpful to u.

Answer 2

Answer:

$\huge\bf\mathcal\green{(◑‿◐)(◑‿◐)(◑‿◐)Answer}$

Given,

L=8m=800cm

B=6m=600cm

H=22.5cm

$\huge\bf\mathcal\green{To \: find}$

Volume of wall=l*b*h

=800*600*22.5

=108000000 cub.cm

$\huge\bf\mathcal\green{Again}$

L=25cm

B=11.25cm

H=6cm

Volume of bricks=l*b*h

=25*11.25*6

=16875cub.cm

Number of bricks = 108000000/16875

$6400 \: bricks$

$\large\bf\mathfrak\red{Itzshizuka}$