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2. Circle - Wikipedia

   en.wikipedia.org/wiki/Circle

   A circle circumference and radius are proportional. The area enclosed and the square of its radius are proportional. The constants of proportionality are 2 π and π respectively. The circle that is centred at the origin with radius 1 is called the unit circle. Thought of as a great circle of the unit sphere, it becomes the Riemannian circle.

3. Measurement of a Circle - Wikipedia

   en.wikipedia.org/wiki/Measurement_of_a_Circle

   Proposition one states: The area of any circle is equal to a right-angled triangle in which one of the sides about the right angle is equal to the radius, and the other to the circumference of the circle. Any circle with a circumference c and a radius r is equal in area with a right triangle with the two legs being c and r.

4. Circumference - Wikipedia

   en.wikipedia.org/wiki/Circumference

   The circumference of a circle is the distance around it, but if, as in many elementary treatments, distance is defined in terms of straight lines, this cannot be used as a definition. Under these circumstances, the circumference of a circle may be defined as the limit of the perimeters of inscribed regular polygons as the number of sides ...

5. Perimeter - Wikipedia

   en.wikipedia.org/wiki/Perimeter

   For example, the perimeter of a rectangle of width 0.001 and length 1000 is slightly above 2000, while the perimeter of a rectangle of width 0.5 and length 2 is 5. Both areas are equal to 1. Proclus (5th century) reported that Greek peasants "fairly" parted fields relying on their perimeters. [ 2 ]

6. Juan Soto had no correspondence with Yankees players during ...

   www.aol.com/sports/didnt-talk-those-guys-signing...

   Soto revealed that there was no communication with his former Yankees teammates during the free-agent process.

7. Pi - Wikipedia

   en.wikipedia.org/wiki/Pi

   The circumference of a circle with radius r is 2πr. The area of a circle with radius r is πr 2. The area of an ellipse with semi-major axis a and semi-minor axis b is πab. The volume of a sphere with radius r is ⁠ 4 / 3 ⁠ πr 3. The surface area of a sphere with radius r is 4πr 2.