How Can I work out the rough surface area of an egg
with one of the most simple formulas you know which is still accurate?
Please reply soon. Thankyou very much
You can assume the egg to be spherical with a radius R. Area is then 4 x
pi x R^2. If you take R to be the longest (shortest) radius of the egg,
the surface area is over(under)estimated. You can use the average of the
two, however, for a better approximation. I think it is best to use the
geometric average R=Squarerootof(R1 x R2) (where R1 and R2 are the major
and minor axes) instead of the arithmetic average (R=(R1+R2)/2).
You can alternatively assume an ellipsoidal shape, but I do not remember
the equation for its surface area.
Dr. Ali Khounsary
Advanced Photon Source
Argonne National Laboratory
Argonne, IL 60439
the surface area is 4pi x major axis x minor axis.
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Update: June 2012