The Surface Area of a Torus calculator computes the surface area of a torus (circular tube) based on an inner radius of (a) and an outer radius of (b).
INSTRUCTIONS: Choose units and enter the following
- (a) - inner radius of the torus
- (b) - outer radius of the torus
Torus Surface Area (A): The calculator returns the surface area in square meters. However, this can be automatically converted to compatible units via the pull-down menu.
The Math / Science
The formula for the surface area of a torus is:
`A = pi^2 * (b-a)^2`
where;
- A = surface area of the torus
- a = inner radius of the torus
- b = outer radius of the torus
