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He gives a bunch of examples in that link.
yeah but all ineed is an equation :P
It's there in the blue box
Here's a tutorial as well :-) http://www.youtube.com/watch?v=tfn4cpkPHUI Other people way smarter than me can explain it better which is why I provided links lol.
oh okay thank you :P
Do you have a particular problem you're working?
this one: Find the arc length of a sector that is 125° and has a radius of 20 in.
Oh... so there's no function. Is this for precalc?
Oh okay! For some reason whenever I hear "arc length" I think of calculus. Here you go! http://www.worsleyschool.net/science/files/sector/calculations.html
okay thank u hahaha
how did u work it?
Click on the link and tell me how YOU would work it :-)
lol k thnx
Wait nm. I read the instructions too fast. not 6.94
125/360= 2.08 the you go 2*3.14*20=125.6?
First find the area of the entire circle. 2*pi*20 = 40pi Okay now divide 125degrees by 360 125/360 = 0.3472 Now multiply 0.3472 by 40pi Arc length = 0.3472*40*pi = 43.63 in
"125/360= 2.08" You must have accidentally divided 360 over 125.
oops okay thnk u so mcuh!
Sorry for the confusion :-)
Do you have to do anything involving finding area of a sector? B/c it looks like the link covers that as well.
Let x be the arc length in inches Then, 125 is to 360 as x is to the circumference of the circle 25/72 = x/(2*pi*20) 25/72 = x / 40*pi 72 x = 25(40 pi) x = (125/9) * pi