The points (8, 4) and (2, 2) are the ends of a diameter of a circle. Find the coordinates of the centre and the radius.

I know the centre is (5, 3) ...but how do you find out the radius?

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- Jun 20th 2009, 04:37 AMJoker37...finding the radius
The points (8, 4) and (2, 2) are the ends of a diameter of a circle. Find the coordinates of the centre and the radius.

I know the centre is (5, 3) ...but how do you find out the radius? - Jun 20th 2009, 04:52 AMyeongil
- Jun 20th 2009, 05:12 AMJoker37