represent underroot4.7 on no. line
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Sol:

To locate √4.7 on the number line, we have to follow the steps given below.
1) Mark the distance 4.7 from a fixed point A on a given line to obtain a point B such that AB = 4.7 units .
2)From B mark a distance of 1 unit and mark the new point as C.
3)Find the mid point of AC and mark that point as 'O'.Draw a semi circle with centre O and radius OC.
4)Draw a line perpendicular to AC passing through B and Intersecting the semi-circle at D.Then BD = √4.7.
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