São: naturais (n); números inteiros (z); números inteiros, exceto o zero (z-); números racionais (q); números irracionais (i); números reais (r). Sobre os conjuntos numéricos e seus elementos, é correto afirmar que :

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

i got 10.28 but that rounds up to 10.3