4. A tangent to a circle at the point P from A is 24 cm long. If O is the centre of the circle and
OA = 26 cm, find the diameter of the circle.
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Answer:
OA=26cm
<OPA=90�
AP=24cm
OP=√(OA^2-PA^2)
=√(676-576)
=√(100)
=10
Radius=10 Cm
Diameter=2r=20Cm
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