The circumference of a circle (or ring) is P= 2*pi*r so:
r=100/(2*pi) = 15.91
and the diameter is 2*r = 31.83 miles.
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To calculate the spiral ring in a pile, you first need to determine the diameter of the pile and the pitch of the spiral. The spiral ring is essentially a helical shape that wraps around the pile in a specific pattern. You can use trigonometry and geometry principles to calculate the length and spacing of each coil in the spiral ring. This calculation is crucial for ensuring the stability and load-bearing capacity of the pile structure.
To calculate the length of helical ring of pile, use the standard formula. The formula is pi D X the number of coils. "D" is the diameter of the coils.
62.83 feet
Diameter multiplied by pi multiplied by the height is the area of a cylinder. If your looking for a cylindrical ring, like a dougnut, then compute the area of the smaller cylinder (the hole) and subtract this from the area of the larger cylinder (the doughy goodness)
Shop around. Few are willing to pay the "two months salary" for a diamond ring, but a visit to some local jewelry shops will give you perspective on what is a fair price.