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Question

If the lengths of the chords intercepted by the circle x2+y2+2gx+2fy=0 from the co-ordinate axes be 10 and 24 respectively, then the radius of the circle is



A

17

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B

9

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C

14

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D

13

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Solution

The correct option is D

13


Given 2g2=10|g|=5

and 2f2=24|f|=12

Therefore, radius is 52+122=13


Mathematics

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