Want it exact? Here it is:499.243083(got it from my calculator), if rounded, then here it is:500
The smallest angle is an acute angle. You remember this by thinking "This is a cute and tiny angle"
The answer is 113.04 should be correct...
Basically, the question is asking, what will happen if we increase 9 by 30%?
first, what is 30% of 9?

So, the increase will be by 2.7 days,
So the total amount will be 9+2.7=11.7 - this is the correct answer.