Volume of Revolution Calculator
Calculate the volume and surface area of a solid of revolution using the disk or shell method.
Inputs
Results
Volume
8.3776 cubic units
Surface Area17.7715 sq units
How to Use This Calculator
- Select the function f(x) that will be revolved, and enter its defining parameters.
- Set the bounds of integration (a to b) along the x-axis — the solid extends across this interval.
- Choose the Disk Method (revolution around x-axis): V = π ∫[a,b] [f(x)]² dx.
- Choose the Shell Method (revolution around y-axis): V = 2π ∫[a,b] x·f(x) dx.
- The cross-section profile chart shows the radius of the solid at each x value, representing half the disk diameter.
- Both methods produce the same volume for the same region — choose based on which integral is easier to set up.
How the result changes with x End
| x End | Volume |
|---|---|
| -40 | 67,020.6433 cubic units |
| -15 | 3,534.2917 cubic units |
| 15 | 3,534.2917 cubic units |
| 40 | 67,020.6433 cubic units |
What each input means
- Function Type
- Function to revolve around the x-axis
- Coefficient a
- Leading coefficient
- Coefficient b
- Second coefficient
- x Start
- Left bound of rotation region
- x End
- Right bound of rotation region
- Method
- Disk method integrates cross-sectional areas; shell method integrates cylindrical shells
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersFunction Type = 1, Coefficient a = 1, Coefficient b = 0, x Start = 0 = 6 input(s) provided
- Calculate VolumeVolume = volume8.3776 = 8.3776
Engine last updated . Checked against 3 independently-derived tests — how we verify calculators.
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