However, the calculation of surface area is different for prisms and cylinders. So use the net to imagine what it would look like if it were converted to a plane and calculate the surface area. In the calculation of space figures, we will be presented with 3D figures. We can convert a three-dimensional figure into a two-dimensional figure.įor example, the following is a net of a quadrangular prism. After disassembling a three-dimension by using scissors, the figure is expanded to become a flat surface, which is called a net. How do we figure out the area of bases and sides? To do this, we can use nets. The Total Area of the Net Is the Surface Area We can then calculate the surface area of the column by adding the two base areas and the side areas. By adding up the sides, we can get the side area. On the other hand, the side surface is the side. This area is the base area, respectively. Each part needs to be calculated separately.įor a prism and a cylinder, the base and sides are as follows.Įach of the top and bottom surfaces is a base.
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