33 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be :  Pick one
A) 84 m B) 88 m C) 42 m D) 137 m E) none

Rationale: "sol . let the length of the wire b h . radius = 1 / 2 mm = 1 / 20 cm . then , 22 / 7 * 1 / 20 * 1 / 20 * h = 33 ⇔ = [ 33 * 20 * 20 * 7 / 22 ] = 4200 cm = 42 m . answer c"
Answer: C