An equilateral triangle with sides of length 6 is inscribed in a circle. what is the diameter of the circle?
a. 5.2
b. 6
c. 6.9
d. 7.5

c.6.9 units (to the nearest tenth of a unit)

Step-by-step explanation:

sin60=(s/2)/(d/2)  where s=side of triangle and d=diameter of circle

sin60=s/d

√(3/4)=s/d

d=s/√(3/4)

d=s√(4/3)

d=2s/√3 and since s=6

d=12/√3

d=√48

d≈6.9282

hope this helps:)sorry if it doesnt

6.9

Step-by-step explanation:i just took the test and got a hundred

50.6

step-by-step explanation: