49. If the volume and the surface a...
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49. If the volume and the surface area of a sphere are numerically equal, then its radius is (1) 1 unit (2) 2 units (3) 3 units (4) 4 units

11th - 12th Class
Maths
Solution
103
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49. (3) : Volume of sphere = Surface area of sphere ( Rightarrow quad frac{4}{3} pi r^{3}=4 pi r^{2} ) ( Rightarrow quad r=3 ) units
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