I could really use some help

[JohnBRockerf]

I have a assignment due by Friday and ive done most of it but a few problems are really killing me and I was wondering if I could get some help and by help I mean the answers lol to some problems if u can help me I will be greatly apprciative.

 

3. Find the length of arc S, if r= 10 and its like a 0 with a line in the middle = pie over 6.

 

4. Find the area A of the sector if the 0 with the line in the middle = pie over 4 and r = 6

 

5. If the latitude of Chicago is about 42 degrees and the radius of the earth is about 4000 miles, how far is Chicago from the eaquator? (use pie = 3.1416)

 

please can some one help me its a matter of life and death lol.

[matt grime]

Pi doesn't have an e in it. (I've has an apostrophe, u isn't a word etc, other old man comments...)

 

Otherwise use the formula you were given for arc length (or sector area) in term of angle.

[Sir Ask Alot]

your help is here.

 

http://www.google.com

[RyanJ]

your help is here.

 

http://www.google.com

 

Or here, this has all the information & equations you'll need

 

http://en.wikipedia.org/wiki/Circle

 

Cheers,

 

Ryan Jones

[grayfalcon89]

Unless I'm mistaken, this seems like pretty elementary geometry.

 

Just use area of the sector for A is:

 

[math]A = \frac{x}{2 \pi} r^2 [/math]

 

where [math]x[/math] is in radians. Maybe some Pythagoras but as some other people posted, it's not very difficult I think.

 

Ha.. I love pie and pi.