find the length of the arc in the figure

so i know the arc length formula is s=(a/360) x 2pi(r)

however, every time i plug in the numbers from the figure, i always get pi, which isn't correct. explain?

Question

find the length of the arc in the figure

so i know the arc length formula is s=(a/360) x 2pi(r)

however, every time i plug in the numbers from the figure, i always get pi, which isn't correct. explain?

anonymous · Answer

in the figure, theta is 36o and the radius is 5

studygurl14 · Answer

okay, so let's say the arc angle is 20 degrees. You plug in like this:

s = (20)/360 * 2pi(r)

Also, instead of 2pi(r), you could do (d)pi where d = diameter

anonymous · Answer

everytime i do that i get pi and apparently thats wrong

ikram002p · Answer

cud u attach  the figure ??

studygurl14 · Answer

what problem are you using this on? What is the angle measure of the arc and the radius?

anonymous · Answer

here

studygurl14 · Answer

oh, okay. So s does not equal 36 degrees. instead it equals (360 - 36) degrees. understand now?

ikram002p · Answer

ok !
just convert from degree to rad
ill show u how

usukidoll · Answer

pi/180 is the formula for radians , , ,

studygurl14 · Answer

you don't need to do that. just use the formula you have already @psantos97

ikram002p · Answer

attachment

anonymous · Answer

wow im dumb, i have to get the angle for the larger area. completely slipped my mind. i thought i was solving for the smaller area!

ikram002p · Answer

:D