Question

6. The length and breadth of a rectangular room is 4 m and 3 m respectively. If this
class room is to be tiled with square tiles whose side is 40 cm, how many tiles will be
required ?​

Answer 1

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Answer 2

The total number of '75 tiles' will be required.

Step-by-step explanation:

Given,

The length of a rectangular room = 4 m = 4 × 100 cm = 400 cm and

The breadth of a rectangular room =  3 m = 3 × 100 cm = 300 cm

The side of square tiles (a) = 40 cm

To find, the total number of tiles will be required = ?

We know that,

The area of a rectangle = Length(l) × Breadth(b)

∴ The area of a rectangular room = 400 cm × 300 cm

Also,

The area of a square times = 40 cm × 40 cm

∴ The total number of tiles will be required $=\dfrac{The area of a rectangular room}{The area of a square times}$

$= \dfrac{400 cm \times 300 cm}{40 cm \times 40 cm}$

$= \dfrac{400 \times 300}{40 \times 40}$

= 75

Thus, the total number of '75 tiles' will be required.