Question

A hall is 10 metres long and 8 metres wide. what will be the cost of carpenting the room if 0.5 metres of space is left around the room ? the rate of 0.25 metre wide carpet is rs. 20 per metre.

Answer 1

Area of the floor for carpeting is
$(10 - 2 \times 0.5) \times (8 - 2 \times 0.5) \\ 9 \times 7 = 63 \: {m}^{2}$
Given, cost of 1 × 0.25 = 0.25 m2 area carpet is Rs. 20
Therefore cost of carpeting room is
$\frac{20}{0.25} \times 63 = rs. \: \: 5040$