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Area of the cross-section of a wire is m...

Area of the cross-section of a wire is measured using a screw gauge. The pitch of the main scale is0.5 mm. The circular scale has 100 divisions and for one full rotation of the circular scale, the mainscale shifts by two divisions. The measured readings are listed below.

What are the diameter and cross-sectional area of the wire measured using the screw gauge?

A

`2.22 pm 0.02` mm, `pi(1.23 pm 0.02) "mm"^(2)`

B

`2.22 pm 0.01 "mm",pi(1.23 pm 0.01)" mm"^(2)`

C

`2.14 pm 0.02 " mm",pi(1.14 pm 0.02)" mm"^(2)`

D

`2.14 pm 0.01 " mm", pi(1.14 pm 0.01)" mm"^(2)`

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