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Question
One chord of a circle is known to be 10 cm. The radius of this circle must be
Options
5 cm
greater than 5 cm
greater than or equal to 5 cm
less than 5 cm
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Solution
greater than 5 cm
We are given length of a chord to be 10 cm and we have to give information about the radius of the circle.
Since in any circle, diameter of the circle is greater then any chord.
So diameter > 10
⇒ 2r > 10
⇒ r > 5 cm
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