66 cubic centimetres of silver is drawn into a wire 1 mm

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

1. 84
2. 128
3. 116
4. None of these

Correct Option: A

If the length of wire be h cm, then
πr²h = 66

⇒	22		1		²	× h = 66
	7		20

⇒ h =	66 × 400 × 7	= 8400 cm
	22

= 84 metre