A tangent from a point p touches the circle at N the radius of the circle is 5.6cm and the distance from p to the centre is 10.6 what is the length of PN
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Answer: 9
Step-by-step explanation:
10.6 ^2 - 5.6^2
112.36 - 31.36
= (81)0.5 or use square root
= 9
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