Hi,

I'm going through a pre-test located here: http://paccadult.lbpsb.qc.ca/eng/ext...109Pretest.ppt with answer key located here: http://paccadult.lbpsb.qc.ca/eng/ext...0solutions.ppt. I've included screen shots in case you're not comfortable downloading the files. My problem is I can't make sense of questions...

Question 6 & 7:

Question Sheet: http://i.imgur.com/yb0JpSM.png

Answer Key : http://i.imgur.com/bvwICaP.png

For six my question is easy, do you go clockwise or counter-clockwise when deciding what mBC consists of as far as circumference? In other words, how do I know if it's major arc BC or minor arc BC?

For 7b, it seems like the radii of the larger circle to the smaller circle have a ratio of 3/1, or k=3. So area should be k^2, or 9 time greater than the small, but this is false? I don't understand that. Is it because it has a hole in the middle so you have to factor that in? I don't understand the explanation for 7d either, could someone help clear that up?

Question 8:

http://i.imgur.com/iPp8STv.png

For this question, I got it to a point where the terms were correct but the signs were not right. I understand up to the substitution part, but by mjolnir I have no idea what they subsistuted in and where they got it.

I've only gotten to question 10 of 14, so I'm sure there will be more but I have to go to bed. The exam is in less than 48 hours so I would really appreciate the help with this one. I haven't done any geometry other than since this was introduced to me on Friday in years, and the exam is after 5 days so this is a bit rough and I appreciate your help.

Thanks!