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2015-02-09T16:32:38+05:30

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Outer dimensions = L = 10 cm, B = 9 cm and H = 2.5 cm
Outer volume = LBH = 10 × 9 × 2.5 = 225 cu cm

Thickness = 0.5 cm

Inner dimensions = 
l = L - 2w = 10 - 2(0.5) = 9 cm
b = B - 2w = 9 - 1 = 8 cm
h = H - w = 2.5 - 0.5 =  2 cm   (Open at the top)

Inner volume = lbh = 9 × 8 × 2 = 144  cu cm

Volume of metal = Outer volume - Inner volume
 
                           = 225 - 144
                        
                           = 81 cu cm 



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