The length L (in centimetre) of a copper...

The length L (in centimetre) of a copper rod is a linear function of its Celsius temperature C. In an experiment, if `L = 124.942 " when" C = 20 " and " L = 125.134 " when " C = 110`, express L in terms of C.

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The correct Answer is:

`L = (.192)/90 (C - 20) + 124.942`

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