Aims Grade 8 Mathematics Sample Test And Think-Throughs With Answers Page 34
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36December 2009
Grade 8 AIMS Reference Sheet
22
Use 3.14 or
for .
7
Plane Figures: Perimeters and Areas
Circumference (C )
Name
Notation
Perimeter (P )
Area ( A)
r
radius
2
Circle
C
d
or
C
2
r
A
r
d
diameter
a b
,
sides
Parallelogram
P
2
(
a
b
)
A
bh
h
height
l
length
Rectangle
2(
)
P
l
w
A
l w
w
width
h
height
a b c d
, , ,
sides
b
long base
1
Trapezoid
A
h b
(
b
)
P
a
b
c
d
1
2
1
2
b
short base
2
h
hei
g g ht
a b c
, ,
sides
1
bh
Triangle
P
a
b
c
A
bh
or
A
h
height
2
2
Geometric Solids: Volumes and Surface Areas
Name
Notation
Volume (V )
Surface Area ( SA)
l
length
Rectangular
w
width
V
l wh
l
l
SA
2
w
2
h
2
wh
Prism
h
height
Right
r
radius
2
2
V
r h
SA
2
r
2
rh
Cylinder
h
height
B
area of the base
Right
h
height
V
Bh
SA
2
B
Ph
Prism
P
perimeter of the e base
Arizona Department of Education
34
Grade 8
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