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18 Terms
1
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area of a square using diagonals
(d^2)/2
2
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area of a square
s^2
3
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area of a rectangle
lw
4
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perimeter of a square
4s
5
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perimeter of a rectangle
2(l+w)
6
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arithmetic sequence
an=a1+(n-1)d
7
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sum of arithmetic sequence using first and last term
sn=n/2(a1+an)
8
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sum of arithmetic sequence
sn=n/2(2a1+(n-1)d)
9
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geometric sequence
an=a1r^n-1
10
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sum of geometric sequence
sn=a1(1-r^n)/1-r
11
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area of a circle
πr²
12
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surface area of a circle
4πr²
13
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volume of a circle
4/3πr³
14
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area of a parallelogram
a=bh
15
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area of a triangle
a=bh/2
16
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30-60-90 triangle
s-s√3-2x
17
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surface area of a cylinder
2πrh+2πr²
18
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volume of a cylinder
πr²h
Note 
Flashcards (66)