Find the length of chord which is $4 c m$ away from center to a circle of radius $5 c m$

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Solution

The distance of chord is $4 c m$
The radius of chord is $5 c m$
The length of chord is $2 \sqrt{r^{2} - d^{2}} 2 \sqrt{25 - 16} 2 \sqrt{9} = 2 (3) = 6 c m$

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