Question

The length breadth and height of a room are respectively 15.35 m 4.65 m and 6.50 m if there are 4 door of size 1.5m *1.3m and 3 windows of size 1.5*1.2m then find the expenditure on whitewashing the room at the rate of ₹3.40 per square metre

Answer 1

Answer:

Rs 839.12

Step-by-step explanation:

The length breadth and height of a room are respectively 15.35 m 4.65 m and 6.50 m if there are 4 door of size 1.5m *1.3m and 3 windows of size 1.5*1.2m then find the expenditure on whitewashing the room at the rate of ₹3.40 per square metre

Area of   4 walls

= 2 * 15.35 * 6.5  + 2 * 4.65 * 6.5

= 13(15.35 + 4.65)

= 13 * 20

= 260 m²

Area of 4 doors = 4 * 1.5 * 1.3 = 7.8 m²

Area of 3 Windows = 3 * 1.5 * 1.2 = 5.4  m²

Area to be white washed = 260 - 7.8 - 5.4 = 246.8 m²

Expenditure of white wash of 4 walls = 246.8 * 3.4 =  Rs 839.12