PSAT equations memorisation Flashcards
1
Q
A
2
Q
A
3
Q
Area of circle
A
πr^2
4
Q
Circumference of circle
A
2πr
5
Q
Area of rectangle
A
lw
6
Q
Area of triangle
A
(1/2)bh
7
Q
Pythagoras’s theorem
A
c^2 = a^2 + b^2
8
Q
Special right triangles
A
- 30˚ 60˚ 90˚
hypotenuse = 2x
opposite to 30˚ = x
adjacent to 30˚ = x√3 - 45˚ 45˚ 90˚
hypotenuse = s√2
opposite + adjacent = s
9
Q
Volume of cuboid
A
lwh
10
Q
Volume of cylinder
A
πr^2h
11
Q
Volume of sphere
A
(4/3)πr^3
12
Q
Volume of cone
A
(1/3)πr^2h
13
Q
Volume of square-based pyramid
A
(1/3)lwh
14
Q
Degrees of arc in a circle
A
360
15
Q
Number of radians of arc in a circle
A
2π
