I agree with the answer above me but i don’t rly know history so good luck
We see here in the diagram that the base is a. We know this because the height is perpendicular to it. We also know the height is bsin(C) which, when replace h for bsin(C) and a for the base, we get A=absin(C), which is the second option.
The anwer would be 276,000 because 5 or up u round something lower than 5 it stays the same and the numbers behind it turn into zero's
It is 19.73% because you do 72/365
365 days a year to get the answer
I hope this helps!