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Maths Easter Break 2021 > Formula Essentials > Flashcards

Formula Essentials Flashcards

1
Q

How To find the area of a Rectangle

A

Base * Height

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2
Q

How To find the area of a Triangle

A

1/2BaseHeight

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3
Q

How To find the area of a parallelogram

A

Base*Height

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4
Q

How To find the area of a Trapezium

A

1/2(a+b)*Height — [“a” and “b” are variables to represent the two bases of a trap.]

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5
Q

How To find the area of a Circle

A

Pi*Radius^2

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6
Q

How To find the circumference of a Circle

A

Pi2Radius

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7
Q

How To find the volume of a Prism

A

Cross-section*Length

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8
Q

How To find the area of a Cylinder

A

PiRadius^2Height

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9
Q

How To find the area of a Rectangular based Pyramid

A

1/3lengthwidth*height

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10
Q

How To find Sin A

A

oposite/ hypotenuese

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11
Q

How To find Cos A

A

adjacent/hypotenuese

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12
Q

How To find Tan A

A

opposite/adjacent

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13
Q

Sine Rule

A

a/SinA=b/SinB=c/SinC

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14
Q

Cosine Rule

A

a^2=b^2+c^2-2bcCosA

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15
Q

How To find the area of any triangle (using SIN)

A

1/2*abSinC

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16
Q

Pythagoras Theorem

A

a^2+b^2=c^2

17
Q

Formula to find speed (distance and time)

A

Distance= speed*time

18
Q

Formula to find density (mass and volume)

A

Mass= density*Volume

19
Q

Formula to find pressure (force and area)

A

Force= pressure* area

20
Q

what is P(A)

A

it means the probability of outcome A

21
Q

what is P(B)

A

it means the probability of outcome B

22
Q

what does(A OR B) equal to

A

P(A)+P(B)-P(A&B)

23
Q

what does(A AND B) equal to

A

P(A given B)P(B)

24
Q

How to find the value of investment

A

P(1+R/100)^n — P = principle amount, r = interest rate, n = number of times the investment is compunded

25
Q

What is the quadratic formula

A

x = (-b +/- (b^2-4ac)^1/2) / 2a

26
Q

Exterior angles in a polygon?

A

360/No sides

Maths Easter Break 2021 (1 decks)

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