-- Exact circumference = 2pi meters -- Approximate circumference = 6.283 meters
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21.91 meters
-- exactly (pi) meters -- approximately 3.1416 meters
Volume = pi525 = 393 cubic meters rounded to the nearest integer
The nucleus has a width on the order of 10^(-15) meters, while an electron is (on average) a distance of 10^(-10) meters from the nucleus. If you were to magnify the nucleus to the size of a baseball, the electrons would be orbiting at a distance of around 1000 meters. That is, there are about 50,000-100,000 nucleus diameters to the electron's average radius.
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Nucleus of a cell ~10-7 - 10-6 m Atomic nucleus ~10-14 m
-- Exact circumference = 2pi meters -- Approximate circumference = 6.283 meters
Mitochondria are about 0.5-1.5 micrometres in width and 3-10 micrometres in length. I can't find an approximate size for the endoplasmic reticulum, but if you compare it to the nucleus, the RER+SER together surround the nucleus and are slightly larger than the nucleus when put together.
some people say it's one mile long, but it's only 3 meters long.
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21.91 meters