Question

3. Construct AB of length 7.8 cm. From this, cut off AC of length 4.7 cm. Measure BC.
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Answer 1

Answer:

(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

PLZ MARK AS BRIANLIEST AND THX FOR THE SUPERB QUESTION

Answer 2

$\huge{answer}$

sԵҽթ 1:-

Draw a line l.Mark a point A on it.

sԵҽթ 2:-

Since length of AB is 7.8cm, we measure 7.8cm using ruler and compass.

sԵҽթ 3:-

Now keeping compass opened the same length.We keep pointed end at point A, and draw an arc on line l.So the required line segment is AB =7.8cm

sԵҽթ 4:-

Now, we need to cut of AC of length 4.7cm.We measure 4.7cm using ruler and compass.

sԵҽթ 5 :-

Now keeping compass opened the same length.We keep pointed end at point A, and draw an arc on line l.

Result:The required line segment AC =4.7cm