When finding the surface area of a composite figure, you have to exclude any faces that are shared between the individual figures that make up the composite figure. This is because those shared faces are already accounted for in the surface area calculations of the individual figures.
For example, if you have a composite figure made up of a rectangular prism and a cylinder, the bases of the cylinder are shared with the top and bottom faces of the rectangular prism. Therefore, when finding the total surface area of the composite figure, you would exclude those shared faces to avoid counting them twice. By excluding these shared faces, you ensure that you are only counting each face of the composite figure once in the total surface area calculation.
Composite figures are two or more figures combined. When finding the surface area, you cannot simply find the separate surface areas and add them. What face(s) do you have to exclude from the total surface area? Explain.
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bit shorter pls
When finding the surface area of a composite figure, you have to exclude any faces that are shared between the individual figures that make up the composite figure. This is because those shared faces are already accounted for in the surface area calculations of the individual figures.