Question

A room is $4m$ long and $3m50cm$wide. How many carpets of area $1$$squaremetre$ each is needed to cover the floor of the room?

Answer 1

Step 1: Calculate the breadth of floor

Length of floor of the room $=$$4m$

Breadth of floor of the room $=$$3m50cm$

$$\begin{gathered} =3m+\frac{50}{100}m \\ =3m+0.5m \\ =3.5m \end{gathered}$$ $(1m=100cm)$

Step 2: Calculate the Number of carpets required

Area of floor of the room $=l\times b$

$$\begin{gathered} =4\times 3.5 \\ =14m^2 \end{gathered}$$

Thus, $14$ carpets of area $1$$squaremetre$ each is needed to cover the floor of the room.