Can you have a perfect circle?

[Seagull27]

I wrote a blog about this I'm so into it.

Andrew Stewart

I suggest you double check your measurements. A micrometre isn't 1/100 of a cm, and a nanometre isn't one millionth of a metre.

 

[DavidinSouthampton]

Yup, oblate spheroid is right the definition.

I can remember a Maths Lesson at Worthing High School in the 3rd or 4th Form with a certain Scottish maths master in the mid 60's where he described the earth as an oblate spheroid, which he further described as "an orange that someone has sat on" - a fairly precise definition there.

 

[Pbseagull]

Pi is more easily perfectly represented as 22 divided by 7

22 divided by 7 was used by the Egyptians around 1,000 BC. Correct to 3 decimal places