Help please- Question 1 : Find Surface area of the cone atached below and use 3.14 for Pi

Question 2 : Fiind AB

Question 3 : Which figure has the greatest volume, (is not drawn to scale)

Attachments are below. I would really appreciate your help. Thank you!

Hannah works at the mall selling book bags. she sold 35 book bags in 5 hours. how many book bags did she sell per hour?

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?