Circles by Ben Smith

How many sides do circles have?

bensmith1231 — 2014-12-05 14:33:30 UTC

Some say none, some say one, some say infinite tiny little separate lines?

What are your views? Feel free to post your opinions

bensmith1231 — 2014-12-05 14:36:22 UTC

Pi is the guideline to working out anything about a circle.

To the nearest 2d.p. PI is 3.14

PI goes on forever, but 2d.p. is all you really need to know.

PI is also the circumference of the circle divided by the diameter.

The PI symbol is

bensmith1231 — 2014-12-05 14:38:05 UTC

The circumference of a circle is the length around the circle.

You can work out the circumference by multiplying PI by the diameter of the circle (the length across the circle).

Here is a helpful formula:

C=PI x D

bensmith1231 — 2014-12-05 14:45:35 UTC

The radius is the length from the very middle to the edge of the circle.

A helpful tip is that the radius is ALWAYS half of the diameter.

R=D divded by2 or D=Rx2

bensmith1231 — 2014-12-05 14:51:38 UTC

The diameter of a circle is the length all the way across a circle (crossing through the middle).

The diameter is 2x the radius.

bensmith1231 — 2015-04-03 09:25:36 UTC

For this, R means Radius, D means Diameter and C means Circumference

C=PI x D (Circumference is PI multiplied by the Diameter)

R=D/2 or D=R x 2 (Radius is Diameter divided by 2 or Diameter is Radius multiplied by 2)

bensmith1231 — 2015-04-03 09:28:28 UTC

CIRCUMFERENCE

RADIUS

DIAMETER

FORMULA

CIRCLE