An open box is made of wood 3cm thick.its external length,width and height are 1.48m,1.16m and 8.3dm.find the cost of painting the inner surface at rs 50 per m^2
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Area of the box externally= 2(l+b)×h
=12.588 sq.m
convert wood's thickness of cm into m
i.e. 0.03 m
Area of the box internally = area of box externally - wood's thickness
= 12.588 - 0.03
= 12.558 sq.m
cost of painting = 12.558×50
= ₹627.9
=12.588 sq.m
convert wood's thickness of cm into m
i.e. 0.03 m
Area of the box internally = area of box externally - wood's thickness
= 12.588 - 0.03
= 12.558 sq.m
cost of painting = 12.558×50
= ₹627.9
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