Answer:
Rs 2398
Explanation:
Given:
Semi hall
Length(l) = 12 m
Breadth(b) = 5 m
Height(h) = 4 m
Area of the four walls = 2h(l + b)
= 2 * 4 * (12 + 5)
= 2 * 4 * 17
= 136 sq. m.
For Windows
Area of the three windows = 3(l*b)
=3* 2 * 3
= 18 sq. m.
For Doors
Area of the two doors = 2(l*b)
= 2*1.5 * 3
= 9 sq. m.
Area to be plastered = Area of 4 wall - Area of three windows - Area of 2 doors
= 136 - 18 - 9
= 109 sq. m.
Cost of plastering = Rate* Area
= Rs 22 * 109
= Rs. 2398
So the cost of plastering its walls at Rs. 22 per sq. meter is Rs 2398
