Question

please tell fast.........​

Answer 1

12 over 2

6

Step-by-step explanation:

Answer 2

Since it's an equilateral tri, so CD, AE, BF should be perpendicular bisectors of their corresponding opposite sides. & also AO, BO, CO are angle bisectors of angles A,B,C respectively.

=> in right tri ADO

cos 30° = AD/AO = 6/r

=> √3/2 = 6/r

=> √3r = 12

=> r = 12/√3 = 12√3/3 = 4√3 cm

Radius r = 4√3 cm

Thanks

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