Answer:
13
Step-by-step explanation:
A triangle is 180º. We have two angles; 60º and 60º
60+60 = 120
180-120 = 60º
This means that this is an equilateral triangle and all the sides are the same length.
13
I do not know because I am 8 years old sorry
24 feet
3+3 is 9
9+9 is 18
18+9 is 24