A room is 9m long , 8 m broad and 6.5 m high. It has one door of dimensions 2m × 5m and three windows each of dimensions 1.5 m × 1m. Find the cost of white washing the walls at 3.80 rupees per sq. metre.
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Answer:
area of wall= l×b
9×8
72m^2
- area of door =2×5=10
- area of windows=1.5×1×3=4.5
- by adding area of door and window
- we get 14.5
- then less area of wall
- 72-14.5
- 68.5m
- cost of white washing wall=68.5×3.80
- ans is 260.3
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