Q: X and Y are centres of circles of radius 9 cm. and 2 cm respectivel – McqOptions

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1.	Q: X and Y are centres of circles of radius 9 cm. and 2 cm respectively XY=17 cm. Z is the centre of a circle of radius r cm which touches the above circles externally. Given that - ∠xzy = 90o the value of r is -
A.	13 cm
B.	6 cm
C.	9 cm
D.	8 cm
Answer» C. 9 cm

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