being a nerd and a guy who’s hyperfixated on steelix rn i had to do this lol..just thought i’d share my entire process cus it looks absolutely ridiculous
i started out with the formula M = ρV (mass = density x volume).
it’s likely made of rock and metal, which has been compressed under extreme conditions. it’s also “harder than a diamond” (pokedex entry from heartgold). i estimated a rough density of 15,000kg/m^3, for steelix, about twice the density of regular steel.
volume was tricky, but i went off a photo of brock and steelix together and imagined it as a cylinder. brock is about 175cm tall, so i used that to estimate the average radius of the spherical sections of its body, about 0.6m by eye. then, by using πr^2h, i found out that the approximate volume of steelix is 10.4m^3.
it’s true mass would be around 15,000 x 10.4 =156,000kg (343,921lbs). of course it’s not gonna be 100% accurate but this was still pretty fun to do haha