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Frustum of a Cone formulas
4 formulas for Frustum of a Cone, from the Mensuration (2D & 3D) section of the Quantix formula library. Tap 🧮 next to a formula to solve it for any variable with step-by-step working.
| Name | Formula | Note |
|---|---|---|
| Volume | V = (1/3)πh(R² + r² + Rr) 🧮 Solve step by step | |
| Slant height | l = √(h² + (R − r)²) 🧮 Solve step by step | |
| Curved surface area | CSA = πl(R + r) 🧮 Solve step by step | |
| Total surface area | TSA = πl(R + r) + πR² + πr² 🧮 Solve step by step |
What the letters mean
| R | bottom radius |
| r | top radius |
| h | height |
| l | slant height |
A cone with its top cut off parallel to the base (bucket, glass).
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Related: Mensuration (2D & 3D)
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