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At one end A of a diameter AB of a circle of radius 5cm, tangent XAY is drawn to the circle. Find the length of the chord CD parallel to XY and at a

distance 8 cm from A.


Ans is 8.
Only saying that it is 8 cm away and the radius was required.Use pythagoras therom..the distance of midpt of chordfrm centre is 3 cm and given that radius is 5 cm.Draw diagram only then u will understand properly..
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