Question

The radius of sphere is "r" cm. It is divided into two equal parts. Find the whole surface of two parts.

Answer 1

2piersquere will be the ans

Answer 2

Whole surface area of each part :-

$\bf\huge 2\pi r^2 + \pi r^2$

= $\bf\huge 3\pi r^2$

Total surface area of two parts :-

$\bf\huge 3\pi r^2$ +  $3\pi r^2$

= $\bf\huge 6\pi r^2$