Question

CAN ANYONE TELL THE FORMULA OF SURFACE AREA OF SPHERICAL SHELL??

Answer 1

Step-by-step explanation:

Let the inner radius be r1 and outer radius be r2.

Total Surface Area= Inner surface area+ Outer surface area

$= 4\pi \: r {1}^{2} + 4\pi \: r {2}^{2} \\ = 4\pi \: (r1 + r2) {}^{2}$

Hope it helps...

Answer 2

Step-by-step explanation:

4pie r^2............................................