Question

a brick measure 20cm*10cm*3.5cm. how many bricks will be required for wall of dimensions 25m*2m*0.35 m​

Answer 1

convert metre into centimetres.

25m =2500cm

2m= 200cm

0.35m= 35cm

volume of the brick= (l×b×h)

=20×10×3.5

= 700cm

volume of wall=(l×b×h)

=2500×200×35

=17,500,000cm

number of bricks = volume of wall/volume of brick

=175000000/700

=25,000 bricks