Comparable to the barrows of Gnyozdovo near Smolensk, the Black Grave has a height of 11 metres and a circumference of 125 metres.
Czernica has several trees classed as natural monuments: a number of linden trees with circumferences up to 467 cm, and an oak tree with a circumference of 336 cm.
The Diamond synchrotron is housed in a silver toroidal building of 738m in circumference, covering an area in excess of 43,300 square metres, or the area of over six international Association Football Pitches.
Set upon a blue background, ten paddy or rice stalks are drawn in the middle of a red circle with white circumference.
Based on the measurements of the size of the Earth conducted by Riccioli of Bologna (at 321,815 Bologna feet to the degree), Mouton proposed a decimal system of measurement based on the circumference of the Earth, explaining the advantages of a system based on nature.
Following a proposition of Liu Zhuo from 604 AD, 10 of these were aligned along the meridian 114° east of Greenwich from Central Asia down to Vietnam in order to determine the circumference of the Earth and derivations from a perfect sphere.
The Hoop Conjecture, proposed by Kip Thorne in 1972, states that an imploding object forms a black hole when, and only when, a circular hoop with a specific critical circumference could be placed around the object and rotated.
"Akabane Taishi no Enoki" is the oldest hackberry tree in Japan at an estimated 800 years old; it has a circumference of 8.7 meters.
He knew that Archimedes' formula for the area of a circle, which calls for multiplying the diameter by one fourth of the circumference, is not considered a solution to the ancient problem of squaring the circle.
Together with ʿAlī ibn ʿĪsā al-Asṭurlābī in 827, he measured at 35 degrees north latitude, in the valley of the Tigris, the length of a meridian arc and thus the Earth's circumference, getting a result of 40,248 km (or, according to other sources, 41,436 km).
Another Italian, visiting in about 1440, Niccolò de' Conti, mentions that the walls of the city were twelve miles in circumference.
A lead screw has a continuous helical thread machined on its circumference running along the length (similar to the thread on a bolt).
In fact, for a circle the size of the Earth, with a circumference of 40,075 kilometres, the difference between the perimeter of the megagon and the circumference of the circle comes to less than 1/16 millimeters.
Nose is noted for the "Noma Keyaki", a 1,000-year old Keaki tree, 25 m tall, 11.95 m trunk circumference.
It operates like a telephone dial, with ten holes in its circumference numbered 0–9.