66 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length if the wire in meters will be: Options.
A) 76 m	B) 80 m	C) 84 m	D) 88 m	E) none of these

Rationale: explanation : let the length of the wire be h radius = 1 / 2 mm = 120 cm π r 2 h = 66 22 / 7 ∗ 1 / 20 ∗ 1 / 20 ∗ h = 66 = > h = 66 ∗ 20 ∗ 20 ∗ 7 / 22 = 8400 cm = 84 m option c
Answer: C