The Andromeda galaxy (M31) has in recent years been found to have an extended range of faint stars previously unseen, giving the galaxy an overall diameter of about 220,000 light years (~67.5 parsecs). This was roughly three time previous estimates.
What proves difficult in pegging a specific diameter is that galaxies do not have hard edges. The field of stars dwindles in density somewhat gradually. We have to define at what density of stars is a location no longer within the body of a galaxy. This definition would be rather arbitrary and could vary from person to person.
A linear foot is the same as a foot. So, an 18-foot diameter circle would measure 18 linear feet in diameter!
how many linear feet in a 20 foot diameter
43 linear feet. The diameter of the circle is the longest distance that you can have in the circle.
If the circumference of a circle is 16 linear units times pi, then its diameter 16 linear units.
There are 20 linear feet across the diameter; and 20π ≈ 62.83 linear feet around the circumference.
Along the diameter, exactly 4 of them.
To find the linear feet in a given diameter, you need to know the circumference (or perimeter) of the object. The formula to calculate the circumference is circumference = π × diameter. Without the circumference, it is not possible to determine the linear feet.
In Greek myth Andromeda was bethorthed to Phineus.
pi times the diameter
Linear distance of one revolution = 3.14 x diameter = 3.14 x 20 = 62.8 meters
188.4
28.26