The circumference of a sphere is calculated using the same formula as that for a circle, specifically the formula C = 2πr, where r is the radius. For a sphere with a radius of 3.09 inches, the correct circumference is approximately 19.4 inches. This value represents the circumference of a great circle, which is the largest circle that can be drawn on the sphere's surface. The discussion confirms that the formula for circumference applies universally to both circles and spheres.
PREREQUISITESStudents studying geometry, educators teaching mathematical concepts, and anyone interested in understanding the relationship between circles and spheres.
Yes.Perchaddition said:Trying to calculate a circumference of a sphere from a radius of 3.09 inches. Is 19.4 a correct answer?
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.Perchaddition said: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
Thank you. Appreciate your explanation.fresh_42 said: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.