A surveyor uses a steel measuring tape that is exactly 50.000 m long at a temperature of 20°C. The markings on the tape are calibrated for this temperature. When it is 35°C, the surveyor uses the tape to measure a distance. The value that she reads off the tape is 35.794 m. What is the actual distance? The coefficient of linear expansion of the glass is 1.20 x 10-5 K-1 A. 35.8 m B. 30.8 m C. 39.8 m D. 38.5 m

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