Question

The length and breadth of a hall is 20m by 10m. How many tiles of size 50cm x 50cm are required
for the floor of the hall?​

Answer 1

Answer:

area of hall=20×10m²

area of tiles =1/2m×1/2m

no tiles required=area of hall/area of each tile,,,200/1/4=200×4=800tiles required

Answer 2

First let's convert all units to cm.

♣ Dimensions of hall:

• Length = 20 m = 2000 cm
• Breadth = 10 m = 1000 cm

⇒ Area of hall = Length × Breadth

⇒ Area of hall = 2000 × 1000

⇒ Area of hall = 2000000 cm²

♠ Dimensions of tiles:

• Length = 50 cm
• Breadth = 50 cm

⇒ Area of 1 tile = Length × Breadth

⇒ Area of 1 tile = 50 × 50

⇒ Area of 1 tile = 2500 cm²

Now we know that there will be many tiles in a hall.

Here in this question, we need to find the number of tiles that can be fitted.

So we need to divide the area of hall by area of 1 tile.

$\sf{ Number \: of \: tiles = \dfrac{2000000}{2500}}$

$\therefore \large{\underline{ \boxed{ \bf{Number \: of \: tiles = 800}}}}$