From point Q, 13 cm away from the centre of circle, the length of tangent PQ to the circle is 12 cm. Find the radius of the circle
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Step-by-step explanation:
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Answer:5cm
Step-by-step explanation:given:PQ=12cm
OQ=13cm
so it is a right triangle where PQaltitude OQ hypotenuse and OP base
by pythagoraus theorem
OP=√OQ^2-PQ^2
=√ 13^2-12^2
=√169-144
=√25
=5
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