All Equations Flashcards
Area of a Rectangle
Length × Width
l × w
Area of a Parallelogram
Base × Height
b × h
Area of a triangle
2
(b ×h)/2
Area of a Trapezium
1/2(a+b) × h
Circumference of a circle
Circumference = Pi × diameter
Or
Circumference =2 × pi × radius
Area of a circle
Area = pi × radius^2
Pythagoras’ Theorem
A^2 +b^2 = C^2
Trigonometric Ratios
Sin x° = opp/hyp ,Cos x° = adj/hyp ,
Tan x° = opp/adj
The quadratic equation
2×a
Volume of a cuboid
Length × width × Height
l×w×h
Volume of a Prism
Prism = The area of the cross section ×length
Area of a cylinder
Pi × radius squared × Height
Area a of a pyramid
1/3 × area of base × Height
Speed
Distance
Speed =——-
Time
Density
Mass
Density =——
Volume
Pressure
Force
Pressure =—–
Area
Sine rule
a b c
—– = —– = —–
Sin A Sin B Sin C
a/SinA = b/SinB= c/SinC
Sine rule (area)
Area = 1/2(ab)sin(C)
Cosine rule
a^2 = b^2 + c^2 -2bcCos(A)
Histogram equation
Frequency
————— = frequency density
Class width
Exterior angles to find out number of sides
360
——————— = Number of sides
Exterior angle
Median Estimate
stat of group + how far into the group/frequency of group x Number of data in group
total interior angle of a regular polygon
(n-2) x 180
n = number of sides
exterior angles of a regular polygon
360 - interior angle
