Here are some ways:
1. Just be honest.
2. Say it got shredded.
3. Come up with some other stupid excuse.
4. Redo it in the bathroom because you probably remember all the answers or ask people on Brainly for help.
I would say that it's an acute angle ....
1) 31.4ft
2) 81.64m
3) 69.08cm
4) 43.96ft
1) 50inches
2)6inches
3)28.26-9.42=18.84inches
4)≈7.7
89972 is already rounded to 3 significant figures.