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anonymous
 one year ago
***WILL MEDAL***
Find the length of an arc of 40° in a circle with an 8 inch radius.
a) 8pi/9 inches
b) 16pi/9 inches
c) 64pi/9 inches
anonymous
 one year ago
***WILL MEDAL*** Find the length of an arc of 40° in a circle with an 8 inch radius. a) 8pi/9 inches b) 16pi/9 inches c) 64pi/9 inches

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UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1ok so first we need the arc length formula which is \[s = \theta r \] where s = arc length, \[\theta \] = angle , and r is the radius.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh wow they never gave me a formula for this

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1so we are given radius = 8 and our angle is 40 degrees, but I need that in radians so I need to convert \[40 \times \frac{\pi}{180}\] \[\frac{40 \pi}{180}\] \[\frac{2\pi}{9}\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1I think we almost got our arc length \[s= \frac{2\pi}{9} \times 8\]

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1just gotta multiply what's 2pi x 8 ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wait a sec I need to get my calculator

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1actually... we can just leave the pi part alone ._. and just calculate 2 x 8 for the numerator.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1yes so our arc length is \[s= \frac{16 \pi}{9}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So that makes the answer B

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you so much. Now I'm sure I know how to do this. Especially since now I know what the formula is.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1hmmm... Why weren't you given the formula? It was supposed to be given to you x_X

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I know, but they didn't. At least, it didn't show it on the lesson.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'll be right back. It'll be a few minutes

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1k bye... wow shame on whoever for not giving it. _!
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