Question

the
lon
3. A rectangular room 12 m by 10 m is
surrounded by a verandah 3 m wide. Find
the number of bricks 25 cm by 12 cm
needed to pave the verandah.
OCC
11. A​

Answer 1

Answer:

Bricks requirement is 2250 units

Step-by-step explanation:

➡️ Dimensions of the rectangular room = 12m(length)

and 10m(breadth)

➡️ Dimensions including the verandah will be

+3 in each :-

(12+3) = 15m

(10+3) = 13m

Area of the verandah :

= ( Area of the room - area included verandah)

= (12 × 10) m² - (10 × 3)m²

= 120 - 30

= 90m²

Now,

Bricks needed to pave the verandah :-

= Area of the verandah/Area of the bricks

Here, we will convert the dimensions of the brick into metre

So dimensions of the brick 0.25 m and 0.12m

Procedure :

$\sf \: Required \: bricks = \frac{90}{0.25 \times 0.12} \\ \sf = \frac{90}{0.04} \\ \sf = 2250 \: ans.$