A brand community is a community made on the ground of attachment to a particular product. Such community websites provide rich content and information about the product in videos, pictures, activities that establish the brand-consumer engagement and make the strong brand-consumer relationship.
Thus, the correct answer is - Brand community website.
If you look it up, it will give you the approximate value of SA= 2205.4. I really don’t know if this is right because surface area is of a 3D object and area alone is for a 2D object. You may want to look up the proper formula.