How many metres of carpet 63 cm wide will be required to cover the floor of a room 14 metres by 9 metres ?

Answer: Option B

Area of the floor = (14 × 9) m² = 126 m²
∴ Length of the carpet :
$$\begin{array}{rl}& =\left(\frac{126}{63}\times 100\right)\text{m}\\ & =200\text{ metres}\end{array}$$