CHAPTER 3. GEOMETRY3.20 Sector of a Circle
=
o~Çáìë=çÑ=~=ÅáêÅäÉW=o=
^êÅ=äÉåÖíÜW=ë=
`Éåíê~ä=~åÖäÉ=Eáå=ê~Çá~åëFW=ñ=
`Éåíê~ä=~åÖäÉ=Eáå=ÇÉÖêÉÉëFW=α=
mÉêáãÉíÉêW=i=
^êÉ~W=p=
=
==
=
Figure 35.
=
ë=oñ=
°
π α
=
NUMo
ë ==
i=ë+Oo=
°
π α
= = =
PSMo
Ooñ
Ooë
pO O
===
=