# Problem on Circles

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Last seen: 11 years 1 week ago
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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.

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Last seen: 10 years 3 weeks ago
Joined: 2006-08-30
MN is the chord of the

MN is the chord of the larger circle?
If not I donâ€™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. .

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Last seen: 11 years 1 week ago
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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.

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Last seen: 10 years 3 weeks ago
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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

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Last seen: 11 years 1 week ago
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Source

This question i got it from