The radii of two concentric circles are 13 cm and 8 cm. AB is a diamet – McqOptions

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1.	The radii of two concentric circles are 13 cm and 8 cm. AB is a diameter of the bigger circle and BD is a tangent to the smaller circle touching it at D and the bigger circle at E. Point A is joined to D. The length of AD is
A.	20 cm
B.	19 cm
C.	18 cm
D.	17 cm
Answer» C. 18 cm

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