Conical frustum volume

Conical frustum volume: use first radius, second radius, perpendicular height. Review the formula, worked example and calculation steps.

Inputs

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Formula & explanation
V = πh(R²+Rr+r²)/3

Variables & units

First radius
m · minimum 0, maximum 1000000000000
Second radius
m · minimum 0, maximum 1000000000000
Perpendicular height
m · minimum 0, maximum 1000000000000

Worked example

Radii 3 and 1, height 6 give 26π m³.

Assumptions

Radii refer to parallel circular ends; height is perpendicular, not the slant length.

Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.

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