Rectangular Prism Surface Area
SA = 2(lw + lh + wh). Box / cuboid surface.
Result
Surface area
248.0000
2(lw + lh + wh) = 248.0000.
- Length10
- Width6
- Height4
- lw face × 2120.000000
- lh face × 280.000000
- wh face × 248.000000
- Surface area248.000000
- Volume240.000000
Step-by-step
- Three pairs of faces: lw (top/bottom), lh (front/back), wh (left/right).
- SA = 2(lw + lh + wh) = 2(60 + 40 + 24) = 248.0000.
How to use this calculator
- Enter length, width, height.
- Read total surface area.
About this calculator
A rectangular prism has 6 faces in 3 pairs: top/bottom (lw each), front/back (lh), left/right (wh). SA = 2(lw + lh + wh). For shipping cost calculations: surface area drives material cost (cardboard); volume drives weight + space. The optimal box for a given volume is a cube (minimizes SA).
Frequently asked
For boxes without a lid: subtract one lw face. SA = lw + 2(lh + wh).
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