A room is 4.5 m long and 3.8 m broad. Calculate the area of the floor of the room.

Given:

Length of the room = 4.5 m

Breadth of the room = 3.8 m

Area of the floor = ?

The floor will be of rectangular shape

We know the formula,

Area = Length x Breadth

Substituting the values in above, we get:

Area = 4.5 m x 3.8 m

Sum of the decimal places in given decimals = 1 + 1 = 2

So, the product contains 2 places of decimal

$\begin{matrix} & & 4 & 5 \ \times & & 3 & 8 \ \hline & 3 & 6 & 0 \ 1 & 3 & 5 & \times \ \hline \bold{1} & \bold{7} & \bold{1} & \bold{0} \end{matrix}$

∴ 4.5 m × 3.8 m = 17.10 m² = 17.1 m²

Hence, the area of the floor = 17.1 m²