# Real life applications of a circle? (Conics)

for my Math 2U assignment, we have to discuss real life applications of different conic sections.

However, apart from the wheel, I cannot find or think of any other real life applications of the circle.

Does anybody have any suggestions?

Cheers

FYI: The question is: Explain two applications of each conic section.

• Clock, $\pi$, I mean pie,... – copper.hat Jun 18 at 23:24
• Basketball hoop. – Michael Jun 18 at 23:26
• manhole cover is round for a mathematical reason.... – achille hui Jun 18 at 23:26
• I think we have covered them all now. – Michael Jun 18 at 23:27
• Shortest distance between two points on a sphere is part of a great circle. – copper.hat Jun 18 at 23:58