The "diameter" is the maximum width of a circle. It is not a fixed unit of length.
how many linear feet in a 20 foot diameter
There are about 38.48 square feet in a 7' diameter circle
Exactly 2 feet.
1256.64 square feet
Along the diameter, exactly 4 of them.
how many linear feet in a 20 foot diameter
-- 3 feet in the diameter -- 1.5 feet in the radius -- 9.425 feet in the circumference (rounded)
There are about 38.48 square feet in a 7' diameter circle
There are three feet in one yard, so a diameter of two yards is six feet. The radius is half the diameter, so the radius is three feet.
113.1
Exactly 2 feet.
A circle with a diameter of 300 inches has an area of 490.87 square feet.
A 56-inch diameter circle has an area of about 17.06 square feet.
1256.64 square feet
Along the diameter, exactly 4 of them.
A square with an area of five acres has a diameter of 466.7 feet and a diagonal length of 660 feet.
There are 1.77 cubic feet of volume per foot of length at 1.5' in diameter.