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Length of radius?
The end points of a circle's diameter are (5,12) and (7,9). Determine the length of its radius.
The end points of a circle's diameter are (5,12) and (7,19). Determine the length of its radius.
2 Answers
- 5 days ago
Find the distance between the points
(7 - 5)^2 + (9 - 12)^2 = d^2
(2)^2 + (-3)^2 = d^2
4 + 9 = d^2
13 = d^2
sqrt(13) = d
The radius is half the diameter, so that means that r = d/2
r = sqrt(13)/2
There you go.
