8th Grade Summer Math Packet Worksheet - Khan Academy, 2014 Page 14
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21T
S
:
A
P
OPIC
IX
REA
A ND
ERIMETER
The
p erimeter
o f
a
s hape
i s
t he
s um
o f
t he
l engths
o f
i ts
s ides.
T o
f ind
t he
p erimeter,
y ou
s imply
add
t he
l engths
o f
t he
f igure’s
s ides.
R emember
t o
a lways
w rite
u nits
–
y our
a nswer
s hould
n ever
be
j ust
a
n umber!
The
a rea
o f
a
s hape
i s
t he
a mount
o f
s pace
i t
t akes
u p.
U se
t he
f ormula
s heet
i ncluded
i n
t his
review
p acket
t o
h elp
y ou
w ith
t his
a ctivity.
T hese
f ormulas
s hould
b e
c ommitted
t o
m emory,
s o
that
y ou
c an
r ecall
t hem
q uickly.
I
e xpect
e veryone
w ill
h ave
t hese
m emorized
b y
t he
beginning
o f
t he
y ear.
Instructions.
1. Draw
e ach
f igure.
Y ou
d o
n ot
h ave
t o
u se
a
r uler,
a
r ough
s ketch
i s
f ine.
2. Find
t he
P erimeter
o f
t he
f igure.
3. Find
t he
A rea
o f
t he
f igure.
1. Rectangle
w ith
l ength
8
c m
a nd
w idth
6
c m.
2. A
p arallelogram
w ith
b ase
1 2
i nches
a nd
h eight
7
i nches.
3. A
s quare
w ith
s ides
1 4
m .
4. A
t riangle
w ith
b ase
1 6
c m
a nd
h eight
9
c m.
5. A
t rapezoid
w ith
o ne
b ase
o f
3
f eet,
a nother
b ase
o f
8
f eet,
a nd
a
h eight
o f
6
f eet.
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