A cubical box with lid has a length of 30cm .Find the cost of painting the inside and outside of the box at 5.50Rs per metre square.
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Total surface area=6(side)ka square
=6×30×30=5400cmsquare
Area to be painted=2×TSA
=2×5400=10800cmsquare
in metre square =10800/10000=1.08m square
cost=Rs5.50×1.08
=Rs5.94
=6×30×30=5400cmsquare
Area to be painted=2×TSA
=2×5400=10800cmsquare
in metre square =10800/10000=1.08m square
cost=Rs5.50×1.08
=Rs5.94
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