MCQ PracticeIf the ratio between the areas of two circles is 4 : 1 then the ratio between their radii will be ?Subject: MathematicsTopic: AreasA1 : 2B2 : 1C1 : 3D4 : 1Correct Answer: BPractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the