Hello! i'm not quite sure if this is the answer, but i believe it would be 76. I'm not that good with angles, but i'm trying my best to help! I hope the answer helped you! i'm sorry if i get it wrong though. If you have any questions, pm me! thanks!
Answer:
the length of all sides added together
Answer:
1.58
Step-by-step explanation:
15.8 x 0.1= 1.58