Geometryhard · Past Paper
If the length of a tangent from a point P to a circle is 24 cm and the distance of P from the center is 25 cm, find the radius.
A7 cm
B12 cm
C15 cm
D20 cm
✓ Correct Answer: A — 7 cm
r = sqrt(25^2 - 24^2) = sqrt(625 - 576) = sqrt(49) = 7 cm.
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