Question
Answer the questions on the basis of the information given below:
In the adjoining figure, I and II are circles with centres P and Q respectively. The two circles touch each other and have a common tangent that touches them at points R and S respectively. This common tangent meets the line joining P and Q at O. The diameters of I and II are in the ratio 4 : 3. It is also known that the length of PO is 28 cm.
What is the radius of the circle II?
Answer: Option B
:
B
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B
PQOQ=13
PQ=14(28)=7
MPMQ=43(M is point of intersection of two circles)
MQ=3cm
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