When doing solid geometry problems, can anyone form a model in his mind and draw the size of volume and surface area directly through imagination?

In fact, you only need to pay more attention to related objects and phenomena in life, such as a roll of paper in a cube, what is the cross-cutting and oblique cutting of watermelon in a sphere, a box in a cuboid, the shadow of the sun and so on. After all, people are in this three-dimensional vision, and what your eyes see is a two-dimensional plane, which can be directly reflected on paper. Pay more attention to your space, your imagination will be strong and you will soon form a model. Finding the core plane in the imaginary three-dimensional space can solve the problem and draw it on paper. As for how to calculate, unless it is a very simple single digit, you can calculate it in your mind. It is best to write it on paper, with a little semicolon, radical symbols, letters, multiplication and division, etc. If you pack too much, you will only lose points.