O is the centre of the circle and AB is tangent at B.if Ab=15cm and AC=7.5cm.find the radius of the circle.
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Let the radius of circle be x cm.
According to the properties of tangents;
(AB)^2= AC*AD
15*15 = 7.5* (2x + 7.5)
On solving, we get
Radius of circle (x) = 11.25 cm
According to the properties of tangents;
(AB)^2= AC*AD
15*15 = 7.5* (2x + 7.5)
On solving, we get
Radius of circle (x) = 11.25 cm
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