Class 10 Maths Circle/In two concentric circle the radii are OA= r cm and OQ= 6 cm, as shown in

Class 10 Maths Ch 10 Circle
Important question
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Lalan saha
Class 10 Maths Surface area and volume
Exercise 10 class 10 math
In two concentric circle the radii are OA = r cm and OQ = 6 cm, as shown in the figure. Chord CD of larger circle is a tangent to smaller circle at Q. If PA is tangent to larger circle. If PA = 16 cm and OP = 20 cm, find the length CD.

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