The surface area of the sphere is equal to 4 circles of the same radius. Surface area of a sphere. Image gallery Skip image gallery. Image caption, Click to see a step-by-step slideshow.

Surface Area and Volume of Sphere. Here, Radius = r. Sphere Surface Area Formula. Total surface area of a sphere formula = 4πr 2. Sphere Volume Formula. Volume of a sphere formula = 4/3 (πr 3) ...

The decades-old Sullivan’s conjecture, about the best way to minimize the surface area of a bubble cluster, ... It took mathematicians until the late 19th century to prove that the sphere is the best ...