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

The diameter is 6.92 unit.

Step-by-step explanation:

Given : An equilateral triangle with sides of length 6 is inscribed in a circle.

To find : What is the diameter of the Circle?

Solution :

First we picture the situation.

Refer the attached figure below.

We that the angles of equilateral triangle is 60 degrees.

Then, we divide the triangle into two parts to solve the radius.

As,

∠ACD is 60°

In triangle OCD,

Diameter = 2r=2(3.4641)=6.92 unit.

Therefore, The diameter is 6.92 unit.

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Bis your answer. it only holds the decimal numerals