1.

P is a point outside the circle at a distance of 6 . 5 cm from centre O of the circle . PR be a secant such that it intersects the circle at Q and R . If PQ = 4.5cm and QR = 3.5 cm , then what is the radius ( in cm ) of the circle ?

Answer»

`1 .5`
`2 `
`2. 5`
`3 `

ANSWER :3


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