All Equations Flashcards

1
Q

Area of a Rectangle

A

Length × Width

l × w

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2
Q

Area of a Parallelogram

A

Base × Height

b × h

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3
Q

Area of a triangle

A
 2

(b ×h)/2

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4
Q

Area of a Trapezium

A

1/2(a+b) × h

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5
Q

Circumference of a circle

A

Circumference = Pi × diameter
Or
Circumference =2 × pi × radius

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6
Q

Area of a circle

A

Area = pi × radius^2

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7
Q

Pythagoras’ Theorem

A

A^2 +b^2 = C^2

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8
Q

Trigonometric Ratios

A

Sin x° = opp/hyp ,Cos x° = adj/hyp ,

Tan x° = opp/adj

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9
Q

The quadratic equation

A
                           2×a
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10
Q

Volume of a cuboid

A

Length × width × Height

l×w×h

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11
Q

Volume of a Prism

A

Prism = The area of the cross section ×length

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12
Q

Area of a cylinder

A

Pi × radius squared × Height

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13
Q

Area a of a pyramid

A

1/3 × area of base × Height

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14
Q

Speed

A

Distance
Speed =——-
Time

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15
Q

Density

A

Mass
Density =——
Volume

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16
Q

Pressure

A

Force
Pressure =—–
Area

17
Q

Sine rule

A

a b c
—– = —– = —–
Sin A Sin B Sin C

a/SinA = b/SinB= c/SinC

18
Q

Sine rule (area)

A

Area = 1/2(ab)sin(C)

19
Q

Cosine rule

A

a^2 = b^2 + c^2 -2bcCos(A)

20
Q

Histogram equation

A

Frequency
————— = frequency density
Class width

21
Q

Exterior angles to find out number of sides

A

360
——————— = Number of sides
Exterior angle

22
Q

Median Estimate

A

stat of group + how far into the group/frequency of group x Number of data in group

23
Q

total interior angle of a regular polygon

A

(n-2) x 180

n = number of sides

24
Q

exterior angles of a regular polygon

A

360 - interior angle