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# Construct AB of length 7.8 cm. From this, cut off AC of length 4.7 cm. Measure BC.

Q3.    Construct AB of length 7.8 cm. From this, cut off $\overline{AB}$ of length 4.7 cm. Measure $\overline{BC}$.

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The steps of constructions:

(i) Place the zero mark of the ruler at A.

(ii) Mark a point B at a distance 7.8 cm from A.

(iii) Again, mark a point C at a distance 4.7 from A.

By measuring $\bar{BC}$ , we find that BC = 3.1 cm

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