Annulus Area from Outer and Inner Diameters: 40 units Outer Diameter; 10 units Inner Diameter

Specific conversion page with reference context, calculator, and nearby values.

Author

Dr. Elif Yilmaz

Math editorial contributor

Turkish computational biologist at the Max Planck Institute, mapping gene regulatory networks in rare diseases

Reviewed by

Prof. Hans Muller

Math content reviewer

German renewable energy engineer at TU Munich, pioneering grid-scale hydrogen storage solutions

Last updatedFebruary 22, 2026

PublishedFebruary 22, 2026

Table of Contents

  1. Value details
  2. Calculator
  3. Nearby reference values
  4. FAQs
  5. Methodology and review
  6. Navigation and related conversions

40 units Outer Diameter; 10 units Inner Diameter converts to

1,178.097245 sq units

Use this as a quick reference for Annulus Area from Outer and Inner Diameters.

Value Details

Input: 40 units Outer Diameter; 10 units Inner Diameter

Output: 1,178.097245 sq units

Browse all reference values for Annulus Area from Outer and Inner Diameters

Annulus Area from Outer and Inner Diameters

Calculate annulus area from outer and inner diameters.

Calculated Result

Nearby Reference Values

Annulus Area from Outer and Inner Diameters values near 40 units Outer Diameter; 10 units Inner Diameter
ScenarioAnnulus Area
10 units Outer Diameter; 7.5 units Inner Diameter34.36117 sq units
10 units Outer Diameter; 9 units Inner Diameter14.922565 sq units
10 units Outer Diameter; 10 units Inner Diameter0 sq units
20 units Outer Diameter; 0 units Inner Diameter314.159265 sq units
20 units Outer Diameter; 5 units Inner Diameter294.524311 sq units
20 units Outer Diameter; 10 units Inner Diameter235.619449 sq units
20 units Outer Diameter; 15 units Inner Diameter137.444679 sq units
20 units Outer Diameter; 18 units Inner Diameter59.69026 sq units
20 units Outer Diameter; 20 units Inner Diameter0 sq units
40 units Outer Diameter; 0 units Inner Diameter1,256.637061 sq units
40 units Outer Diameter; 10 units Inner Diameter1,178.097245 sq units
40 units Outer Diameter; 20 units Inner Diameter942.477796 sq units
40 units Outer Diameter; 30 units Inner Diameter549.778714 sq units
40 units Outer Diameter; 36 units Inner Diameter238.761042 sq units
40 units Outer Diameter; 40 units Inner Diameter0 sq units
100 units Outer Diameter; 0 units Inner Diameter7,853.981634 sq units
100 units Outer Diameter; 25 units Inner Diameter7,363.107782 sq units
100 units Outer Diameter; 50 units Inner Diameter5,890.486225 sq units
100 units Outer Diameter; 75 units Inner Diameter3,436.116965 sq units
100 units Outer Diameter; 90 units Inner Diameter1,492.25651 sq units
100 units Outer Diameter; 100 units Inner Diameter0 sq units

Frequently Asked Questions

Common questions about Annulus Area from Outer and Inner Diameters, formulas, and expected usage.

What does the Annulus Area from Outer and Inner Diameters calculator do?

It helps with calculating ring-shaped cross-sectional area from measured diameters.

What formula does the Annulus Area from Outer and Inner Diameters calculator use?

Annulus area = π(Do² - Di²)/4.

What inputs are valid?

Diameters must be non-negative and inner diameter cannot exceed outer diameter.

When would I use this?

calculating ring-shaped cross-sectional area from measured diameters

Methodology and Review

This page is generated from the same conversion definition used by the main calculator page, which keeps the calculator, reference table rows, and FAQ schema aligned.

Reviewer and update metadata are shown above and included in structured data. See our editorial policy, review process, and corrections policy.

Use this page as a fast lookup reference, then confirm final project values using applicable standards and manufacturer documentation.