Ex.4-1 What do you understand by “measurement” in surveying practice?

Ex.4-2 Define “significant figures” and “rounding off” of a measurement. Explain their relevance in surveying.

Ex.4-3 Determine the significant figures in the following measurements?

(i)  15.015; (ii) 15.01; (iii) 15.0; (iii) 0.015

Ex.4-4 Round-off the following measurements to 3 significant figures?

(i) 15.55; (ii) 15.64; (iii) 15.65; (iii) 15.68

Ex.4-5 Find the value of?

(i) 56.17 + 11.036 + 79.3015; (ii) 367.796 - 28.7 (iii) 9.703 * 4.07062

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