Mathematics · Geometry

A secant PAB is drawn from an external point P to the circle with the centre at O, intersecting it at A and B. If OP = 18 cm, PA = 12 cm and PB = 22.5 cm, then the radius of the circle is:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1√54 cm✓
2√37 cm
3√41 cm
4√23 cm

Correct answer

√54 cm

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A secant PAB is drawn from an external point P to the circle with the centre at O, intersecting it at A and B. If OP = 18 cm, PA = 12 cm and PB = 22.5 cm, then the radius of the circle is:

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A secant PAB is drawn from an external point P to the circle with the centre at O, intersecting it at A and B. If OP = 18 cm, PA = 12 cm and PB = 22.5 cm, then the radius of the circle is:

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