# SOLUTION: if the center of a circle is at the point (-2,8) and the circle goes through the origin, whats the radius

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 Geometry: Circles and their properties Solvers Lessons Answers archive Quiz In Depth

 Question 527857: if the center of a circle is at the point (-2,8) and the circle goes through the origin, whats the radiusFound 2 solutions by Alan3354, stanbon:Answer by Alan3354(30993)   (Show Source): You can put this solution on YOUR website!The radius is the distance from (-2,8) to (0,0) Answer by stanbon(57290)   (Show Source): You can put this solution on YOUR website! if the center of a circle is at the point (-2,8) and the circle goes through the origin, whats the radius ---- Distance from (0,0) to (-2,8) --- d = sqrt[2^2+8^2] = sqrt(68) = 2*sqrt(17) ============== Cheers, Stan H.