Compute the area of common engineering cross-sections from their measured dimensions.
Last updated: June 2026 | By Patchworkr Team
Perimeter is exact only for the circle and rectangle with the provided inputs.
1. Choose the cross-section shape.
2. Enter the dimensions that define that shape.
3. Read the live area result and the perimeter note.
For a rectangle 10 by 8:
A = 10 * 8 = 80
P = 2(10 + 8) = 36
The provided dimensions do not uniquely determine the boundary length.
Yes, for the dimensions the calculator asks for.
Yes, as long as the values are finite real numbers.
No. It uses a simplified rectangular cross-section model.
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