Question

28 Bob wants to cover the floor of a room 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.

Answer 1

Length of room = 4m
Breadth of room = 3m

Area of room(A1) = 4×3
= 12

Area of tiles (A2) = side × side
= 0.5 × 0.5
= 0.25

No. Of tiles required = A1/A2
= 12/0.25
= 48

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Answer 2

Answer:

Given:

• Bob wants to cover the floor of a room 3 m wide and 4 m long by squared tiles. If each square tile is of side 0.5 m.

Find:

• Find the number of tiles required to cover the floor of the room.

Using formula:

• Area of floor = Length × Breadth.

• Area of square = side × side.

Calculations:

= 4 × 3 = 12 - Eq(1)

= 0.5 × 0.5 = 0.25 - Eq(2)

NUMBER OF TILES NEEDED = AREA OF FLOOR/AREA OF TILE :

Adding equation form eq(1) and eq(2), we get:

= 12/0.25

= 1200/25

= 48

Therefore, the number of tiles required to cover the floor of the room = 18.