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kamlesh kumar

· started a discussion

· 1 Months ago

lot's of mistakes (Question: 233285.0 )

angle xyz is 90 not xzy.
That's is why I don't want to join this test series.

Question:
X and Y are centres of circles of radii 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 \(\angle \)XZY= 90ยบ, the value of r is:
Options:
A) 13 cm
B) 6 cm
C) 9 cm 
D) 8 cm
Solution:

Ans: (b)

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