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if arc AB measures 155 degrees (14 cm), what is the length of the radius of the circle, to the nearest hundredth? drawing.........
 one year ago
 one year ago
if arc AB measures 155 degrees (14 cm), what is the length of the radius of the circle, to the nearest hundredth? drawing.........
 one year ago
 one year ago

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ineedhelponmyhwBest ResponseYou've already chosen the best response.0
dw:1342158548525:dw
 one year ago

ineedhelponmyhwBest ResponseYou've already chosen the best response.0
my teacher says the answer is 5.71 (the radius)
 one year ago

ineedhelponmyhwBest ResponseYou've already chosen the best response.0
...i just dont know how to solve it
 one year ago

WiredBest ResponseYou've already chosen the best response.1
http://en.wikipedia.org/wiki/Arc_(geometry) \[\frac{arc degree}{360}=\frac{arclength}{circumference}\] http://en.wikipedia.org/wiki/Arc_(geometry) \[\frac{arc degree}{360}=\frac{arclength}{circumference}\] \[\frac{155}{360}=\frac{14}{2\pi*r}\] Using cross multiplication: \[155*2\pi*r=14*360\] Solve for r. Note: I got 5.17, so someone wrote it down wrong (either you or the teacher!)
 one year ago

ineedhelponmyhwBest ResponseYou've already chosen the best response.0
lol i was just going to ask if i could cross multiply
 one year ago

WiredBest ResponseYou've already chosen the best response.1
No problemo. Google FTW :)
 one year ago

ineedhelponmyhwBest ResponseYou've already chosen the best response.0
and teachers says to NOT use wikipedia.
 one year ago

WiredBest ResponseYou've already chosen the best response.1
Probably because it's not a truly vetted source. It is better to use your book to find the equation. If you google something (e.g. arc length) and find multiple pages on the net have the same equation, then you're probably good. Having said that your book is always your best source!
 one year ago

ineedhelponmyhwBest ResponseYou've already chosen the best response.0
i dont have a book, i have online schooling and its a test so i cant go back to look at how to solve it.
 one year ago

WiredBest ResponseYou've already chosen the best response.1
Why'd the teacher tell you the answer to a test question?
 one year ago

ineedhelponmyhwBest ResponseYou've already chosen the best response.0
so i could learn how to solve it.
 one year ago
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