Question

a rectangular room is 8 m long 5 m wide and 4 m high. it has two diir 1.5m by 2m each and two windows 2m by 1.8 m each. find the cost of White washing the wall and ceiling of the room at the rate₹ 50 per square meter

Answer 1

Wait for 2 min
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Answer 2

Room area =8*5=40
There are 4 walls for white wash
Area of front and behind wall with length =2(8*4) =64
Area of side walls with breadth =2(5*4)=40
Area of ceiling =8*5=40
Total area =64+40+40=144
Now area to reduce =doors and windows
Area of doors =2 (1.5*2)=6
Area of Windows =2(2*1.8)=7.2
Area to reduce =6+7.2=13.2
Now net area =144-13.2=130.8
Cost @50/sqm=130.8*50=6540.0
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