Question

WILL GIVE MEDAL!!!
What is the general form of the equation for the given circle centered at O(0, 0)?

x2 + y2 + 41 = 0

x2 + y2 - 41 = 0

x2 + y2 + x + y - 41 = 0

x2 + y2 + x - y - 41 = 0

Answer 1

the circle with center O(0,0) and radius 'r' has the form
of
\(\Large x^2+y^2=r^2\)

Answer 2

2nd choice :)

Answer 3

to get the radius, you'll need the length of OB

do you know about the distance formula?

Answer 4

since the radius is √41