19-04-2018
Mathematics

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Find the radius of a circle if a tangent segment to the circle is 12 cm long and the endpoint of the tangent segment is located at a distance 13 units from the center of the circle

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wolf1728 wolf1728

19-04-2018

(See attached graphic)
13^3 = 12^2 + radius^2
radius^2 = 13^2 - 12^2
radius^2 = 169 -144
radius^2 = 25
radius = 5

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