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Question 1.1: Round off the following numbers to three significant figures...

Round off the following numbers to three significant figures: (a) 58 342 m, (b) 68.534 s, (c) 2553 N, and (d) 7555 kg.

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a) 58.3 km b) 68.5 s c) 2.55 kN d) 7.56 Mg

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