The perimeter of such an equilateral hexagon is 54. The circumference of the largest cricle that can be inscribed in it is 18 pi. Hope that helps! That was if you meant the diameter as the length of the longest line that fits in the shape.
The diameter of a circle with a circumference of 18 is: 5.73
The circumference of a circle with a diameter of 18 yards is: 56.55 yards (diameter x Pi = circumference).
The circumference of a circle with a diameter of 18 inches is 56.5 inches.
18/pi
56.548667764616276 circumference = PI * diameter
An 18" diameter circle has a circumference of about 56.5 inches.
The diameter is about 18.
Circumference = pi*diameter So C = pi*18 = 56.5 units (approx).
It has a circumference of 56.5 units.
If the diameter is 18, then the circumference is d*pi or 18pi. 18pi=56.52 if you use 3.14 as pi.
Diameter = 18/pi = 5.73 feet, approx.
The formula for circumference is pi*d = circumference. Therefore just divide the circumference by pi to get diameter. Approx. answer = 5.73