MCQ PracticeIf ΔPQR and ΔLMN are similar and 3PQ = LM and MN = 9 cm, then QR is equal to:Subject: MathematicsTopic: TrianglesA12 cmB6 cmC9 cmD3 cmCorrect Answer: DPractice 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