SSC Government Jobs Exams Numerical Ability Area and Volume

A right circular cylinder is circumscribing a hemisphere such that their cases are common. The ratio of their volumes is

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If the radius of a sphere is increased by 2m, its surface-area is increased by 704 m^2. What is the radius of the original sphere? A man invested 1/3 of his capital at 7%, 1/4 at 8% and the remaining at 10% rate of simple interest. If his annualincome from interests is Rs. 561, the capital invested was