Find the equation of a circle with(i) centre at origin and radius 4,(i – InterviewSolution

1.	Find the equation of a circle with(i) centre at origin and radius 4,(ii) centre at (3,-2) and radius 5.(iii) centre at (-3,-2) and radius 6.(iv) centre at (a, b) and radius va2 + b2(v) centre at (a cos a, b sin c) and radius(1)
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