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Mathematics 34 Online
OpenStudy (anonymous):

how do you find the radius of a circle with center at the origin and with the point (-2,5) on the circle?

OpenStudy (owlfred):

Hoot! You just asked your first question! Hang tight while I find people to answer it for you. You can thank people who give you good answers by clicking the 'Good Answer' button on the right!

OpenStudy (anonymous):

You could do one of two things: You could use the distance formula to find the radius (x1+x2/2, y1+y2/2) and square it, putting it on one side of the equal sign. Then, you take those coordinates, and you place them in the formula for a circle ((x2-x1)^2+(y2-y1)^2=r^2). And remember, always use the sign OPPOSITE the numbers in the coordinate pair. That is a critical point that alotta ppl miss

OpenStudy (toxicsugar22):

hey can u help me

OpenStudy (anonymous):

Sure, toxicsugar. What'ya need?

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