There may be more, but is has been noticed that being good at math and being good in music often go together. The composer Mozart is a case in point; he had solving math problems and calculations as a hobby. Another curious link is that math and music are the only two fields where you will find child prodigies.
It isn't.
Art.
string art includes geometry which is a type of math
Rocks are related to math because of geology and in geology you use math.
The patterns they dance is related to math. How their body moves are related to math. How the brain signals our body to move is related to math. and... there are much more..
It is math related because the eclipse is science and the days are math because you have to count the days and math.
On units of 12
elevators are related to math because elevators have numbers on them
Math is related to numbers and money is counted in numbers.
Population is related to math because it uses percentage
Mathematics is neither an art nor a science. Math is math. (what do limbs have to do with it?)
sometimes they are tessellation