How to calc this

[Arkenis]

Cloud Sizes​

Earth Diameter: 516px, 12,742 km

12,742km / 516px = 24.6937984496

First Cloud: 13px * 24.6937984496 = 321.019379845km

Second Cloud: 12px * 24.6937984496 = 296.325581395km

Third Cloud: 11px * 24.6937984496 = 271.631782946km

Volume and KE​

Since we can't actually see the clouds thickness, there's no way of pixel scaling so I'm going with 12km (seen in the picture of the page)

Density of Clouds: 1.003 kg/m^3

I'm not sure how to calc the rest.

What do I do