Formulas

?
Calculate Profit or Loss
New price - Old price ÷ Old price x 100
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Circumference of a Circle
π d (diameter) 2π r (radius)
2 of 28
Area of a Circle
π r
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Area of a Sector of a Circle
Degree ÷ 360 x π r (cm )
4 of 28
Length of an Arc of a Circle
Degree ÷ 360 x π d (cm)
5 of 28
Volume of a Cylinder
π r x h
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Surface area of a Cylinder
2π r + 2π r h
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Volume of a Pyramid
1/3 x area of base x height
8 of 28
Surface area of a Cone
π r l + r x π
9 of 28
Volume of a Sphere
4/3 π r
10 of 28
Surface area of a Sphere
4π r
11 of 28
Pythagoras Theorem
a + b = c
12 of 28
Sin
Opposite / Hypotenuse
13 of 28
Cos
Adjacent / Hypotenuse
14 of 28
Tan
Opposite / Adjacent
15 of 28
Right Angles Triangle
Pythagoras / SOH CAH TOA
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Non Right Angled Triangle
Sine Rule / Cosine Rule
17 of 28
Sine Rule When?
2 sides and an opposite to on of the 2 sides OR one side and 2 angles
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Cosine Rule When?
2 sides and an angle not opposite to one of the 2 sides OR 3 sides
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Sine Rule (length)
a / SinA = b / SinB = c / SinC
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Sine Rule (angles)
SinA / a = SinB / b = SinC / c
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Cosine Rule (length)
a = b + c - 2bc cosA
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Cosine Rule (angles)
cosA = b + c - a / 2bc
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Area of a Triangle
1/2 ab sin c
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Translations
Vector (moves but doesn't change)
25 of 28
Rotation
How far its moved, Where from , Direction
26 of 28
Reflection
Equation of the Line
27 of 28
Enlargement
Scale Factor, Centre of Enlargement
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Other cards in this set

Card 2

Front

π d (diameter) 2π r (radius)

Back

Circumference of a Circle

Card 3

Front

π r

Back

Preview of the back of card 3

Card 4

Front

Degree ÷ 360 x π r (cm )

Back

Preview of the back of card 4

Card 5

Front

Degree ÷ 360 x π d (cm)

Back

Preview of the back of card 5
View more cards

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