Shadow Ridge High School

MATH 1-2G.C.s WORKSHEET #2 - PATTERSON
1. Determine the arc length.
a) Central Angle of 30",
radius of 3 cm
(, e= 39 tzrr(3)
?tc,c -
=
g1f ct*
36o
b) CentralAngle of 90",
radius of 8 cm
J r g (Zff(t)
?60
s lltlo,[ cn-
?,6o
e) CentralAngle o1?L ,o4.,
radius of 15 cm
J=6I-
3
{ (rs)
c) Central Angle o172",
radius of 10 cm
s= 72- (eir6ro)
' ,co \
= lt'-lq 1F e,..
36o
s= 4?r ar,,. (E)
f) CentralAngte o1 4! ,o4.,
radius of 10 cm
5=6n
s 3$. -r\1ro)
.r)
_
(E) s= 3'Il-c.rr (r)
s= 3ficnr (E) s = lO'iTcrtr (E) ,= I T.r,.^(r)
2. After class Angela says, "l didn't understand how he got the formula for arc length, s = €)r. Did you
understand it?" Explain to Angela where the formula comes from.
Afac LeF\fiH 15 ft % oF -THe ctecunf Wc€ .
s= fu,lrrfr; =elr
'7-t !'{ TTTAL errcrI vALur
lr{ trADIAFlS
3. Determine the arc length of the following.
d) CentralAngle of I