finally doing C0 DC
well first scaling the building:
You must be registered for see links
according to his wiki profile:
You must be registered for see links
he's 2.02 m tall
someone like him can go freely in buildings like that so 3 m for each stage sounds good
i can count upp 8 ones so it's 28 m tall
Spoiler:
You must be registered for see images
then we have the crater
actually to scale the crater i'll use the nearby buildings ( picking up one of the highest building in the panel )
Spoiler:
You must be registered for see images
red line: 2124m -->1062 m radius
green line: 2058m --> 1029m radius
brown line: 498m --> 249 m radius
well crater so ellpisoid
now use this calculator to get the volume
it's a crater so volume is halfed
= 1140235924000000 cm^3
half of that: 570117962000000 cm^3
pulverization so 214 j/cc
29.1 megatons
RESULTS:
29.1 megatons