The dimension of a matcha box which is closed are 6cm×4.5cm×1.5cm.what is the paper size required to close box completely and exactly?
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L×b×h use the formula
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To cover a cuboid we should find Total SurfacE AREA
TSA of cuboid = 2(lb+bh+bl)]
Given l=6cm b=4.5 cm h=1.5 cm
TSA= 2(6*4.5+ 4.5*1.5+ 1.5*6)
=2(27+6.75+9)
=2(42.75)
=85.5 sq cm
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