EASA NAV(A)basic
The approximate circumference of Earth at the equator is…
Answer
21,600 NM
Explanation
The equatorial circumference is approximately 40,000 km, or about **21,600 nautical miles**. The kilometre and nautical-mile figures are alternative units, while the other options do not represent the approximate circumference. **Key takeaway:** Earth's circumference is about 21,600 NM. **Glossary:** NM: nautical mile, approximately 1.852 km.
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