Find the surface area of a sphere having a radius of 4". 32 sq. in. 64 sq. in. 256/3 sq. in.

Option 2nd is correct

surface area(A) of a sphere is, square inches.

Step-by-step explanation:

Surface area(A) of a sphere is given by:

         ......[1]

where, r is the radius of the sphere.

As per the statement:

Radius of the sphere(r) = 4 inch.

Substitute in [1] we have;

square inches.

Therefore, surface area(A) of a sphere is, square inches.