In the diagram O is the centre of the circle with diameter 20 cm.
The circle is the locus of a point X. State the distance of X from O.

5cm

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8cm

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10cm

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20cm

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Solution

The correct option is C 10cm
Sine diameter $= 20 c m$ , Radius $= 10 c m$
and As $X$ lies on circle,
$O X = R a d i u s = 10 c m$ .

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