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How to Calculate Surface Area
Formula
Surface area is the total area of all faces of a 3D shape. For a rectangular prism, SA = 2(lw + lh + wh).
Knowing the surface area helps determine the amount of material needed to wrap or coat an object.
Common use cases:
- Painting and coating material estimates
- Packaging material calculations
- Heat transfer surface computations
Frequently Asked Questions
Dr. David Park
Applied Mathematician, PhD Mathematics
David holds a PhD in Applied Mathematics from MIT. He has published research on numerical methods and computational algorithms used in engineering and scientific calculators.
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