AP ICET 2017

Question 104

The radius (in units) of the sphere whose surface area and volume are numerically equalis

Solution

Surface area of the sphere= $$4\pi\ r^2$$

Volume of the sphere= $$\frac{4}{3}\pi\ r^3$$

Hence $$\frac{4}{3}\pi\ r^3=4\pi\ r^2\ or\ r=3$$


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