figure shows a triangle and its circumcircle what is the radius of the circle AC = 9cm, angle ABC= 60°

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figure shows a triangle and its circumcircle what is the radius of the circle

AC = 9cm, angle ABC= 60°

A2√3

B4√2

C3√3

D√3

Answer:

circumradius = side/√3 = 9/√3 = 3√3

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