A 100 ft steel tape of cross-sectional area 0.0025 in.2, weight 2.3 lb, and standardized at 68°F is 99.992 ft between end marks when supported throughout under a 12-lb pull. What is the true horizontal length of a recorded distance AB for the conditions given in Problems 6.8 through 6.11? (Assume horizontal taping and all full tape lengths except the last.)

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Recorded Average Means of Iension Distance AB Temperature Support (lb) (ft) 86.06 124.73 86.35 94.23 12 68 85 50 75 Though out Though out Ends only Ends only a. 15 C. 25