Can I use the circle circumference formula for a sphere?

[Perchaddition]

Trying to calculate a circumference of a sphere from a radius of 3.09 inches. Is 19.4 a correct answer? Just ran numbers in the first circumference calculator I found http://calcurator.org/circumference-calculator/. Can I use the same formula for a sphere? What can I say ...Geometry is not my passion

 

[fresh_42]

Trying to calculate a circumference of a sphere from a radius of 3.09 inches. Is 19.4 a correct answer?

Yes.

Just ran numbers in the first circumference calculator I found http://calcurator.org/circumference-calculator/. Can I use the same formula for a sphere? What can I say ...Geometry is not my passion

The circumference is always that of a circle. In the case of a sphere, it is the circumference of a great circle, circles of maximal circumference.

 

[mathman]

Define circumference of a sphere.

 

[Perchaddition]

Yes.

The circumference is always that of a circle. In the case of a sphere, it is the circumference of a great circle, circles of maximal circumference.

Thank you. Appreciate your explanation.