Question

Help!
Circle C has a radius of 5cm
Find the length of arc AB
Pic below

Answer 1

Length of Arc if the angle is 360 degree or 2pi is the circumference
\[Length\ of\ arc=2\pi\times r\]
So arc length =angles * r
If the angle is 36, what would be the arc length? Can you try now?

Answer 2

length of arc=31.42

Answer 3

\[A _{L}=r \times \theta \]
Al=Arc length
r=radius
theta = angle in radian.....

Answer 4

@heather040200 yes you're right, good work :)

Answer 5

thank you very much for your help

Answer 6

you can use this formula to also find the arc length
http://math.about.com/od/formulas/ss/surfaceareavol_9.htm