Unit 6 lesson 8 surface area of composite 3-D figures (practice)

To find the total surface area of a composite 3-D figure, you will need to calculate the surface area of each individual component and then add them together.

For example, if the figure consists of a cube and a rectangular prism, you would find the surface area of the cube using the formula 6s^2 (where s is the length of one side of the cube) and the surface area of the rectangular prism using the formula 2lw + 2lh + 2wh (where l, w, and h are the length, width, and height of the rectangular prism).

Once you have calculated the surface area of each component, simply add them together to find the total surface area of the figure.