Your point of reference is magnetic north. On both a sphere, and an flat surface, or larger sphere, this leaves you circling your point of reference that you derive all your further calculations from.

You wouldn't be drawing from real surface area calculations, since you have no way of making said calculations. For this world. A world we have never received any actual photos of from space.

In addition, your link simply takes us to math lessons. Which in no way address the assertion in your reply. As it is simply math exercises, and not a rebuttal of any form.

Surface area worksheets comprise an enormous collection of exercises on different solid figures.

???

Was I not supposed to read any of it? Was I to simply be taken in by the colorful presentation of a child's lesson, and assume failing on my part?