The external length, breadth and height of a closed box are 10 cm, 9 cm and 7 cm
respectively. The total inner, surface area of the box is 262 sq. cm. If the walls of the
box are of uniform thickness t cm, then t equals:
A) 1 cm
B) 23/3 cm
C) 1 cm or 23/3 cm
D) None of these
Answers
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Answer:
A) 1 cm is the right answer
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