Uggh, these are so easy...but i'm tired..and having a brain fart.
1) r=8 2) r=10 3) r=2cosƟ
You don't need to - she said they were easy, and merely "tired": ..... so after a short nap, she should have been able to do them quite quickly. [ assuming her brain had stopped farting ]. They can be done in about 15 minutes top whack if you know and understand the basic principles and methods.
...Yea, it's been like a week. I figured it out. But, thanks so much.-_-
I can.. . . . . can not.. it goes against my principles.. .