Massachusetts Comprehensive Assessment System Grade 8 Mathematics Reference Sheet
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1Massachusetts Comprehensive Assessment System
Massachusetts Department of
ELEMENTAR
ELEMENTARY & SECONDARY
T T A TA A RY
RY Y
R R Y & SECONDAR
Y &
RY Y
R R Y
Y
Grade 8 Mathematics Reference Sheet
VOLUME FORMULAS
PERIMETER FORMULAS
rectangular prism . . . . . .
V
lwh
square . . . . . . . . . . .
P 5 4 s
OR
rectangle. . . . . . . . .
P
2b
2h
V
Bh
(B = area of a base)
OR
P
2l
2w
3
cube . . . . . . . . . . . . . . . . . V
s
(s
length of an edge)
triangle . . . . . . . . . .
P
a
b
c
2
cylinder . . . . . . . . . . . . V
r h
AREA FORMULAS
3
sphere . . . . . . . . . . . . . V
r
3
2
square . . . . . . . . . . . A
s
CIRCLE FORMULAS
rectangle. . . . . . . . .
A 5 bh
OR
C 5 2πr
A 5 lw
OR
C 5 πd
parallelogram . . . . .
A 5 bh
2
A
r
triangle . . . . . . . . . .
A 5
1
trapezoid. . . . . . . . . A
h(b
b
)
PYTHAGOREAN THEOREM
1
2
2
2
circle. . . . . . . . . . . . A
r
c
TOTAL SURFACE AREA FORMULAS
a
rectangular prism . .
SA
2(lw )
2( hw )
2(lh
)
b
2
cylinder . . . . . . . . . SA
2 r
2 rh
2
2
2
a
b
c
2
sphere . . . . . . . . . . . SA
4 r
238
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