Lesson 8.4 • Areas of Regular Polygons
Name
Period
Date
In Exercises 1-3, the polygons are regular.
2. s = 4.2 cm
A = 197 cm2
1. j = 12 cm
a = 14.5 cm
3. a = 6 cm
A = 130.8 cm2
4. In a regular n-gon, s = 4.8 cm, a = 7.4 cm, and A ~ 177.6 cm2. Find n.
area, of
6.
Wfi^f /'« 3-00-q,i>n
t>> «W M
fie a-faer
area. 0 aeye ten
7. Find the area of the shaded region between the square and
the regular octagon, s = 5 cm. r = 3 cm.
^
Discovering Geometry Practice Your Skills
©2008 Key Curriculum Press
CHAPTER 8
55
PIP I.Q.TEST #2
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