Standard equationEasyQuestion 320001
Question
The equation of a circle with centre (h, k) and radius r is:
- A(x−h)² + (y−k)² = r²Correct
- B(x+h)² + (y+k)² = r²
- Cx² + y² = r²
- D(x−h)² − (y−k)² = r²
Correct answer
(x−h)² + (y−k)² = r²
Explanation
Standard form of circle: (x−h)² + (y−k)² = r² where (h,k) is the centre and r is the radius.