What is the standard form of the equation of a circle whose diameter is 12 units and whose center is (-2,9) ?

Answer:(x + 2)² + (y − 9)² = 36Step-by-step explanation:Equation of a circle is:(x − h)² + (y − k)² = r²where (h, k) is the center and r is the radius.Here, the center is (-2, 9) and the radius is 12/2 = 6.(x + 2)² + (y − 9)² = 36