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Mathematics 21 Online
OpenStudy (anonymous):

A circle has a radius with endpoints at (2, 5) and (-1, -4). Find the circumference of the circle. Help me please :C

OpenStudy (anonymous):

Mmmk so the area of a circle is 2rπ. If you look at the two points, those are the points of the radius. Use the distance formula to find how long it is, then plug it into the equation.

OpenStudy (zzr0ck3r):

so as maym said 2(sqrt((-3)^2+ (-9)^2))pi

OpenStudy (anonymous):

i am just dead x_x

OpenStudy (zzr0ck3r):

then math is the least of your problems, in fact you have no problems

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