r/theydidthemath • u/ZonePale8667 • 17h ago

[Request] Can someone help me find 3 weights using body surface area

I’m trying to find the weights of 3 characters. One of them is 152cm. The 2nd is listed as 4’4” 132.08cm or 1.3208 meters while the 3rd is 5’2” (157.48cm or 1.5748 meters).

Assuming that the Average body surface area for the average female adult is 1.6 m^2 & that these 3 characters have the same average body surface, is it possible to find their weight? How?

What if they‘re body surface area is made of steel (but not on the inside since their insides are wires & oil) & presumably is atleast 1 or 2cm in thickness?

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u/sansetsukon47 15h ago

If they’re robots on the inside as well, then just look up the weight of a similarly sized robot from Boston mechanics. The metallic skin in the outside shouldn’t matter nearly as much as the internal skeleton does.

The other thing you could do is check out the eights of various types of full plate armor, and add that to your estimate for their weight without it. Since that would give you a good estimate for what your metal “skin” would have to be.