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Question

Locate 10 on the number line.

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Solution


To represent 10
on the number line, follow the following steps of construction:

(i) Mark points 0 and 3 as O and B, respectively.
(ii) At point A, draw AB OA such that AB = 1 units.
(iii) Join OA.
(iv) With O as centre and radius OA, draw an arc intersecting the number line at point P.
Thus, point P represents 10 on the number line.

Justification:

In right OAB,

Using Pythagoras theorem,

OA=OB2+AB2=32+12=9+1=10

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