the length, breadth and height of a room are 5m,4m and 3m respectively. Find the cost of white washing the inner of the room and celling at the rate of Rs50 per meter square
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find the area of the room and multiply it with the cost given your answer with the right
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Given, length of room=5m
breadth of room=4m
and,height of room=3m
Area of cubiodal shape room=2(lb+bh+lh)
but for white washing bottom is not painted
therefore,we will take area as lb+2bh+2lh.
A/q= lb+2bh+2lh
=> 5m×4m+2×4m×3m+2×5m×3m
=> 20m^2+24m^2+30m^2
=> 74m^2
cost of white washing =74m^2×rs.50/m
=> = rs.370
breadth of room=4m
and,height of room=3m
Area of cubiodal shape room=2(lb+bh+lh)
but for white washing bottom is not painted
therefore,we will take area as lb+2bh+2lh.
A/q= lb+2bh+2lh
=> 5m×4m+2×4m×3m+2×5m×3m
=> 20m^2+24m^2+30m^2
=> 74m^2
cost of white washing =74m^2×rs.50/m
=> = rs.370
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