p is a point lying outside a circle with centre o.a tangent pa touches the circle at a .if pa= 15 cm .op= 17 cm.then the radius of the circle is (1)8 cm (2)5cm(3) 36 cm(4)9 cm
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radius of circle = √17*17-15*15
= √ 289-225 √64
RADIUS OF THE CIRCLE = 8cm.
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