Posted by **Samuel** on Wednesday, April 25, 2012 at 10:59pm.

yo wazzup so can you guys help me with this one problem? Thanks a bunch!

Problem:

Draw a circle whose center is at (1,2) so that the point (1,5) is a point on the circle. What is the circumference of the circle.

I don't get those problems!

- Math -
**Steve**, Thursday, April 26, 2012 at 10:42am
Note that both points are on the line x=1, and are 3 units apart. So, the radius of the circle is r=3.

Now, C = 2pi*r

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