Problem on Circles

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phani's picture
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Hello all, Please help me in solving this problem. A line MN is 10 meters in length and is tangent to one of 2 concentric circles at point A. If it is given that the radii of both the circles are integers, then what is the radius of the inner circle? Thanks in advance.

anita1's picture
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MN is the chord of the

MN is the chord of the larger circle?
If not I don’t think the question is complete because it does not make any sense if MN is a line and its 10 m /or anything

I am solving it with the above assumption that MN is the chord of outer circle.
As per the question MN is 10
So MA =5
OMA is a right angled triangle and the possible Pythagorean triplet with 5 is 12 and 13
So the radius of the outer circle is 13 and inner circle is 12.
Not sure If it z correct. .

phani's picture
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Re: MN is the chord of

Even i thought the same. But, incidentally the same solution based on the same assumption that you had taken.

Thanks.

anita1's picture
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Ok so the question is not

Ok so the question is not correct and incomplete
Cld you please tell the source of the question

phani's picture
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Source

This question i got it from

tenaday

Thanks

Incognito
Incognito's picture
hiiiiiiiiiii

i think that u r solution is wrong

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