Answer:
12.60
Step-by-step explanation:
If you are asking if your work is good,thn yes,you are right
Answer:
it just says PDF won't let me download I. sorry
Answer:
Option 3rd is correct that is 
Step-by-step explanation:
Since, the pennant has three points it is in triangular shape since, have three points
Triangle is enclosed figure.
As we know the sum of interior angles of triangles is 
Therefore, Option 1,2,4 are discarded.
Hence, Option 3rd is correct.