Question

The dimensions of a room are 16 × 14 × 10 meters. There are 4 windows of 1.3 m × 1.4 cm and 2

doors of 2m × 1m. What will be the cost of white washing the walls and painting the doors and

windows, if the rate of white washing is Rs.5 per m2 and rate of painting is Rs.8 per m2

.

Answer 1

Answer:

Rs 7653.36

Step-by-step explanation:

Find the area of the 4 walls including windows and doors:

Area = 2(Length + Breadth) x Height

Area = 2(16 + 14) x 10 = 600 m²

Find the area of the 4 windows and 2 doors

Windows = 4(1.3 x 1.4) = 7.28 m²

Doors = 2(2 x 1) = 4 m²

Total area = 7.28 + 4 = 11.28 m²

Find the total area to be whitewashed and paint:

Area = 600 -11.2 = 588.72 m²

Find the cost:

White washing = 5 x 588.72 = Rs 2943.60

Painting = 8 x  588.72 = Rs 4709.76

Total cost = 2943.60 + 4709.76 = Rs 7653.36

Answer: The cost is Rs 7653.36