Wednesday, 20 July 2011

The Perimeter Of A Circle



Use this rule:

π x d 

OR

π x 2r


Example:

The diameter of the circle is 4cm.

Pi multiplied by 4 is 12.56637061.

Round off to one decimal and the answer is...
12.6cm.

Posted by at
Labels: ,

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)