Surface area is the total area of all faces of a 3D figure, found by unfolding into a net.
Grade 6Common Core 6.G.A.4GVerified correct ✓
Worked examples
A triangular prism has a right-triangle cross-section with legs 5 and 3. The prism's length is 6. Draw the net and find the total surface area. Round to 4 decimal places. Answer: 97.9857
A rectangular prism has length 2, width 9, and height 9. Draw the net and find the total surface area. Answer: 234
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Master Surface Area Using Nets
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