Question

how many bricks each 25 cm long and 5 cm high will be required for a wall 250 cm high and 125 cm long?

Answer 1

Area of wall = lb

= 250×125=31250 cm^2

Area of brick=25×5

=125cm^2

No. of bricks= 31250/125

= 250

therefore 250 bricks will be required

Answer 2

The number of bricks required are 250.

Step-by-step explanation:

Given : Bricks each 25 cm long and 5 cm high will be required for a wall 250 cm high and 125 cm long.

To find : How many bricks will to required ?

Solution :

A wall 250 cm high and 125 cm long.

The area of the wall is $A_w=l\times b$

$A_w=250\times 125$

$A_w=31250\ cm^2$

A brick 25 cm long and 5 cm high.

The area of the brick is $A_b=l\times b$

$A_b=25\times 5$

$A_b=125\ cm^2$

The number of bricks required is

$n=\dfrac{A_w}{A_b}$

$n=\dfrac{31250}{125}$

$n=250$

Therefore, the number of bricks required are 250.

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