Question

Which expression gives the surface area of a sphere with radius r?

Answer 1

Answer:

Area of sphere is given by $4$ · $\pi$ · $r^2$

Step-by-step explanation:

The surface area of sphere is given by:

$Area$ $of$ $sphere$ $=4$ · $\pi$ · $r^2$

Option C and D are correct but  is missing in the options

Option A and B are incorrect.

$\pi =3.14$ to solve the area of sphere when radius is given a constant value.