The dimensions of an open box are 52, 40 and 29 cms. Its thickness is 2 cms. If 1 cm3 of metal used in the box weighs 0.5 gms, the weight of the box is________?

A. 8.56 kg
B. 7.76 kg
C. 7.756 kg
D. 6.832 kg

D. 6.832 kg
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