A right circular cylinder just encloses a sphere of radius `r` as shown in figure. Find the i.surface area of the sphere ii curved surface area of the cylinder iii. ratio of the area obtained in (i) and (ii)

Explanation

To solve the problem step by step, we will find the surface area of the sphere, the curved surface area of the cylinder, and then the ratio of the two areas.

### Step 1: Find the Surface Area of the Sphere

The formula for the surface area \( A \) of a sphere is given by:

\[
A = 4\pi r^2
...