Question

A A wall is to be built using bricks of dimensions 20 cm x16 cm x10 cm: How many bricks will be required if the wall is 10m long, 5m high and 2m thick ​

Answer 1

Answer:

31250 bricks

Step-by-step explanation:

The volume of the wall of any dimensions needs to be completely filled according to the question. This means that the number of bricks multiplied by the volume of 1 brick should give us the volume of the wall.

Let the number of bricks be N. Therefore,

N*volume of 1 brick=Volume of the wall

Since both the wall and the brick are cuboids, the volume of both will be done using the formula length*breadth*height.

N*(20cm*16cm*10cm)=(10m*5m*2m)

Changing the units to have the units same on both sides.

N*($\frac{20}{100} *\frac{16}{100} *\frac{10}{100}$)=(10*5*2)

N=$\frac{10*5*2*100*100*100}{20*16*10}$

N=31250 bricks