No, I don't think so. I know someone who has a big head, but that person is short.
So here's your proof :]
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Height is how long circumference is the distance around
The circumference is about 25.13 units.
you divide the surface area by the circumference.
Entire surface area of a cylinder = (2*pi*radius^2)+(circumference*height) If you are given the circumference then radius = circumference/2*pi
what is the average head circumference of a 5 year old boy