Lessons

General Aptitude
8.1 Volume and Surface Area - General Questions

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Q.

66 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be:

View Answer

Correct choice: A

Explanation:

Let the length of the wire be h.

Radius = 1/ mm = 1/ cm. Then,
2 20
22/ x 1/ x 1/ x h = 66.
7 20 20
h = (66 x 20 x 20 x 7)/ = 8400 cm = 84 m.
22
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