Question

1. How many bricks will be required for a
wall 8 m long, 6 m high and 22.5 cm thick,
if each brick measures 25 cm x 11.25 cm x
6 cm?
(A) 640
(B) 1380
(C) 6400
(D) 7600​

Answer 1

Answer:

answer☝

Step-by-step explanation:

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Answer 2

ANSWER

Dimention of Wall;

l=8m=800cm

h=6m=600cm

b=22.5cm

volume of the wall =lbh=800×600×22.5

=10800000cm

3

Dimention of brick;

l=25cm

b=11.25cm

h=6cm

volume of brick =lbh

=25×11.25×6

=1687.5cm

3

therefore number of bricks=volume of wall/volume of 1 brick

=

1687.5 = 10800000

= no . of bricks are 6400