Equations Flashcards
1
Q
Area of a rectangle
A
Length × width
2
Q
Area of a Parallelogram
A
Base × height
3
Q
Area of a triangle
A
Base × height ÷ 2
4
Q
Area of trapezium
A
(A + B) × height (divided by 2)
5
Q
Area of a cricle
A
Pi × radius²
6
Q
Circumference of a circle
A
Pi × diameter
7
Q
Speed
A
Distance ÷ time
8
Q
Density
A
Mass ÷ volume
9
Q
Pressure
A
Force ÷ area
10
Q
Sin x°
A
Opposite ÷ hypotenuse
11
Q
Cos x°
A
Adjacent ÷ hypotenuse
12
Q
Tan x°
A
Opposite ÷ adjacent
13
Q
Sine rule
A
A B C
——— = ——— = ———
Sin A Sin B Sin C
14
Q
Cosine rule
A
a² = b² + c² - 2bc Cos A
15
Q
Area of triangle (trigonometry)
A
(1/2) × a × b × SinC
