Surface Area of Solids Worksheets

Examples, solutions, videos, and worksheets to help grade 7 students to determine the surface area of three-dimensional figures, including both composite figures and those missing sections.

Printable “Surface Area” Worksheets:
Nets of Solid Figures
Find Surface Area using Nets
Surface Area of Rectangular Prisms
Surface Area of Right Prisms
Surface Area of Solids (include composite solids)

How to find Surface Area of Composite Figures?

To find the surface area of composite figures (also known as composite solids), you need to calculate the surface area of each individual shape that makes up the figure and then add or subtract the areas as needed. Composite figures can be a combination of prisms, cylinders, cones, pyramids, and other solids.

Steps to Find the Surface Area of Composite Figures:

1. Break Down the Figure: Identify the different simple solids that make up the composite figure. Break the composite figure into its individual components.
2. Calculate the Surface Area of Each Component: Use the appropriate formula for each solid’s surface area.
3. Consider Overlapping Surfaces: When solids are combined, some surfaces may overlap or be hidden. These surfaces should not be included in the total surface area calculation.
4. Add or Subtract the Areas: Add the surface areas of the components, and subtract any overlapping or hidden areas to find the total surface area of the composite figure.

Have a look at this video if you need to review how to find the surface area of composite solids.

• Finding the Surface Area of Composite Solids

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More Surface Area of Solids Worksheets

Printable
(Answers on the second page.)
Surface Area of Solids Worksheet #1
Surface Area of Solids Worksheet #2
Surface Area of Solids Worksheet #3
Surface Area of Solids Worksheet #4
Surface Area of Solids Worksheet #5
Surface Area of Solids Worksheet #6

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Surface Area of Solids

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Surface Area of Composite Solids

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