Question

The dimensions of a brick are 24cm*12cm*8cm. How many bricks will be required to build a wall 24cm long, 8cmhigh and 60 cm thick,if 10% of the wall is filled with mortar.

Answer 1

Answer:

Step-by-step explanation:

1.Volume of wall=24*8*60=11,520cm^3

Individual bricks=24*12*8=2304cm^3

2.no. of bricks required=11520/2304=5

5 bricks will be required

Answer 2

I think the question was mistyped ...

Volume of the wall

Length = 24 m = 2400 cm

Breadth = 8 m = 800 cm

Volume = length × breadth × height

             = 2400 cm × 80 cm × 60 cm

Volume of brick

90% of the volume of brick would be needed.

Volume = 24 cm × 12 cm × 8 cm

             = 24 cm × 12 cm × 8 cm

Number of bricks required

2400 cm × 80 cm × 60 cm / ( 24 cm × 12 cm × 8 cm ) × 90/100

⇒ 100 × 10 × 5 × 10 × 9/10

⇒ 1000 × 5 × 9

⇒ 45,000

45,000 bricks are needed .