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.  Choose the correct answer:
A) 8.04kg
B) 8.14kg
C) 8.24kg
D) 9.04kg
E) None of these
Explanation:   Volume of the metal used in the box = External Volume - Internal Volume   = [(50 x 40 x 23) - (44 x 34 x 20)] cm3   = 16080 cm3   Weight of the metal =[(16080 x 0.5)/1000] kg = 8.04 kg.   8.04kgnswer: 8.04kg
<result>A</result>
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.