Question

This circle is centered at the origin, and the length of its radius is 8. What is

the equation of the circle?

Answer 1

The equation of a circle with centter ( x - h ) 2+ ( y - k ) 2 = r2.

For a circle centered at the origin this becames the more familiar equation x2 + y2 = r2.

hope it's help you ^0^

Answer 2

Answer: The equation of a circle with center (h,k) and radius r is given by (x−h)2+(y−k)2=r2 . For a circle centered at the origin, this becomes the more familiar equation x2+y2=r2

Explanation: