Question

How many bricks each 25cm by 15cm by 8cm are required for a wall 32cm long, 3m high, 40cm thick?

Answer 1

wall,

L=32cm

B=40cm

H=3m

=300cm

now,

brick,

l=25cm

b=15cm

h=8cm

no.of bricks=volume of wall/volume of 1 brick
no.of bricks=LBH/lbh
no.of bricks=32×40×300/25×15×8
no.of bricks=384000/3000
no.of bricks=128
no.of bricks are 128

hope this answer will help you

Answer 2

Answer: 128 bricks

Step-by-step explanation:

Volume of cuboid = Length × breadth × height

Volume of bricks = 25 cm × 15 cm × 8 cm

Volume of bricks = 375 × 8 cubic cm = 3000 cubic cm

Volume of room = 32 cm × 3 m × 40 cm

Since 1 m = 100 cm so 3 m = 300 cm

Volume of room = 32 × 300 × 40 cubic cm

Volume of room = 384000 cubic cm

So number of bricks required = 384000 / 3000

= 384/3 = 128 bricks