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The dimensions of an open box are 50 cm, 40 cm and 23 cm. Its thickness is 2 cm.

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The dimensions of an open box are 50 cm, 40 cm and 23 cm. Its thickness is 2 cm. If 1 cubic cm of metal used in the box weighs 0.5 gms, find the weight of the box.

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Volume of the metal used in the box = External Volume - Internal Volume 

= [(50 * 40 * 23) - (44 * 34 * 20)] cm3 

= 16080 cm3 

Weight of the metal =((16080*0.5)/1000) kg = 8.04 kg.

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