A circle has its centre at O. A tangent drawn from a point P, which is – McqOptions

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1.	A circle has its centre at O. A tangent drawn from a point P, which is situated outside the circle, touches the circle at A. If PA = 4 cm and PO = 5 cm, then the length of the radius of the circle is
A.	1 cm.
B.	2 cm.
C.	3 cm.
D.	4 cm.
Answer» D. 4 cm.

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