MCQ PracticeThe external and internal diameters of a hemispherical bowl are 10 cm and 8 cm respectively. What is the total surface area of the bowl ?Subject: MathematicsTopic: Volume And Surface AreaA257 cm 2B286 cm 2C292 cm 2D302 cm 2Correct 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