Stop? Somewhere around 1/3 of the diameter for a 45deg sloped pyramid, adding more layers would start projecting off the sides, offering no additional support for the new layer. Drawing a teardrop shape with a perfectly circular head and perfectly tangential tail with be the same as a cross section of this planet/pyramid
What would you do as the side length of the base approaches the diameter of the Earth
Stop? Somewhere around 1/3 of the diameter for a 45deg sloped pyramid, adding more layers would start projecting off the sides, offering no additional support for the new layer. Drawing a teardrop shape with a perfectly circular head and perfectly tangential tail with be the same as a cross section of this planet/pyramid