SOLUTION: Could you please help me with this proble Find the equation of a circle with center at the origin and point (4,7) on the circle.

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: Could you please help me with this proble Find the equation of a circle with center at the origin and point (4,7) on the circle.       Log On


   

Question 32142: Could you please help me with this proble
Find the equation of a circle with center at the origin and point (4,7) on the circle.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The radius is the distance from (0,0) to (4,7)
=sqrt(4^2+7^2)= sqrt(65)
EQUATION:
x^2+y^2=r^2
x^2+y^2=65
Cheers,
Stan H.