Question

Mathematics explain clearly ​

Answer 1

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Answer 2

1. on the number line take 2unit from O are represent the point as A.

2.At point A draw a perpendicular and make B such that AB=1 unit

3.Now with O as a center and OB as redius draw an arc to cut the number line at c.

4. point C represents √5 on the number line

in triangle OAB using pythagoras theorem, we have

OB^2+OA^2+AB^2

=2^2+1^2

=5

OB √5 units