You have to count the lines on a solid figure
"Figure" can be a written symbol of a number ora diagramora geometrical shape.It is also used as a word in place of "calculate".
either you were born skinny or you will have to work out on your skinnyness you would like
A plane figure has 2 dimensions (length & width$ & is represented by a flat surface. It takes 3 noncollinear points to make a plane. A solid figure has 3 dimensions. It not only has length...
Partition it into simple shapes and work out their areas. Then add together all the components.