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A steel tape measures that length of a c...

A steel tape measures that length of a copper rod as `90.0` cm when both are at `10^(@)C`, the calibration temperature, for the tape. What would the tape read for the length of the rod when both are at `30^(@)C`. Given `alpha_("steel")=1.2xx10^(-5)" per".^(@)Cand alpha_(Cu)=1.7xx10^(-5)per .^(@)C`

A

90.01 cm

B

89.90 cm

C

90. 22 cm

D

89. 80 cm

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A
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