Question

A rectangular hall is 12m long and 6m broad. Its flooring is to be made of square tiles of side 30 cm. How many tiles will fit in the entire hall? How many would be required if tiles of side 15 cm were used?

Answer 1

Answer:

Number of tiles required = 4 × number of tiles of side 30 cm = 4 × 800 = 3200 ∴ 3200 square shaped tiles of 15 cm side will be required.

Step-by-step explanation:

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Answer 2

Given:-

• dimensions of hall = 12m × 6m
• square tiles have the following dimensions,

1. 30cm
2. 15cm

To find:-

Number of tiles required to cover the entire floor of the hall

Solution:-

Area of the hall,

= 12m × 6m

= 72m²

Area of 30cm square tile,

= 30cm × 30cm

= 900cm²

= 0.09m²

Therefore number of tiles required to cover the entire floor of the hall,

$\sf = \frac{72}{0.09}$

$\sf = 800$

Area of 15cm square tile,

= 15cm×15cm

= 225cm²

= 0.0225m²

Therefore number of tiles required to cover the entire floor of the hall,

$\sf = \frac{72}{0.0225}$

$\sf = 3200$

Final Answer:-

Therefore number of tiles required to cover the entire floor with,

1. 30cm square tiles = 800
2. 15cm square tiles = 3200

$\rule{200pt}{1pt}$