NDA Math Circle

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Consider the following for the next two (02) items that follow.
A circle is passing through the points (5,−8), (−2,9) and (2,1).

[NDA-II 2021]

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Question : 4 of 26

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If r is the radius of the circle, then which one of the following is correct?

[NDA-II 2021]

r<10
10<r<30
30<r<60
r>60

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