Question

Vishal wants to cover the floor of a rectangular room with 3 m wide and 4 m long by squared tiles. If each square tile is of side 0.5 m, then find the number of tiles required to cover the floor of the room. 
1. 28
2. 48
3. 60
4. 72

Answer 1

Correct Answer - Option 2 : 48

Given:

The length of the room = 4 m

The breadth of the room = 3 m

Side of the squared tiles = 0.5 m

Concept used:

The total area of tiles must be equal to the area of the floor of the room

Formula used:

Area of the rectangle = (l × b)  

Area of the square = (side)² 

Number of tiles = (Area of the rectangle room)/(area of the squared tile)

Calculations:

Area of the rectangle = (l × b) 

⇒ (4 × 3) = 12 m²

area of the square = (side)2 sq. unit

⇒ (0.5)²

⇒ 0.25 m²

Number of tiles = Area of the rectangle room/area of the squared tile

⇒ 12/0.25

⇒ 1200/25

⇒ 48

∴ Number of tiles required is 48