Subject: How can the surface area of an egg be measured?

As you know, the surface area of a flat object can be approximated 
by tracing it onto paper, cutting it out, weighing it, and 
dividing its weight by the known weight per square inch of the 
paper.

Is there a similar technique by which a three-dimensional object's 
surface area can be measured?

I'm particularly interested in determine the approximate surface 
area of an egg, but I would be delighted to know if there is a 
general approximation method for the surface area of irregular 
objects.

Re: How can the surface area of an egg be measured?