Answer:
its 15.43
Step-by-step explanation:
you didnt put a picture for the polygons but im pretty sure this is from math nation.
a
1 is 2x45
2 is x348
3 is x78
4 is x89
x = 0.8
For this problem we will be using trigonometry :
Here the logarithm has base 2
Let
Now, take logarithm to the base 10
So,