Thursday, May 3, 2012


Diameter is the distance across a circle through its centre

Some Examples:

Radius (radii is the plural) is the distance from the centre of a circle to its outer edge

Some Examples:

We can do the formula 2R=D this means that 2 radii are needed to make a diameter of a circle.
1/2 x D = R
D/2 = R

Here's a video....

This has some extra things but it's still helpful.

More Help? Then Check this out. (it has some extra stuff but it still helps)

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