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4. Represent \(\sqrt{9.3}\) on the number line.
Answer :

Firstly we draw AB = \(\sqrt{9.3}\) units. Now, from B, mark a distance of 1 unit.
Let this point be C. Let O be the mid-point of AC. Now, draw a semi-circle with centre O and radius OA.
Let us draw a line perpendicular to AC passing through point B and intersecting the semi-circle at point D.
Therefore, the distance BD = \(\sqrt{9.3}\) units.
(representation fig)
Draw an arc with centre B and radius BD which intersects the number line at point E, then the point E represents \(\sqrt{9.3}\) .