Question

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

Answer 1

Answer:

The answer is- 5.6

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Answer 2

Step-by-step explanation:

(1) Draw a line land mark a point A on it. (2) By adjusting the compasses up to 7.8 cm, draw an arc to cut 1 on B, while putting the pointer of compasses on point A. AB is the line segment of 7.8 cm. (3) By adjusting the compasses up to 4.7 cm. draw an arc to cut 1 on C, while putting the pointer of compasses on point A. AC is the line segment of 4.7 cm. (4) Now, put the ruler along with this line such that 0 mark of the ruler will match with point C. On reading the position of point B, it comes to 3.1 cm, BC is 3.1 cmRead more on Sarthaks.com - https://www.sarthaks.com/698151/constructbr-ab-of-length-7-8-cm-from-this-cut-offac-of-length-4-7-cm-measure-bc