What is the value of n?

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1 Answer
Shwetank Mauria · Kushagra
May 25, 2017

#n=6#

Explanation:

When two chords of a circle intersect each other,

Product of the segments of one chord is equal to the product of the segments of the other chord.

For detailed proof refer here.

Hence #7(n+4)=5(n+8)#

or #7n+28=5n+40#

or #7n-5n=40-28#

or #2n=12#

That is(i.e.) #n=12/2=6#

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