Maths - Formulas Flashcards
0
Q
SA of a cone
A
Sπr + πr^2
1
Q
SA of a cylinder
A
2πrh X 2πr^2
2
Q
SA of a sphere
A
4πr^2
3
Q
V of a sphere
A
3/4πr^3
4
Q
V of a cylinder
A
πr^2h
5
Q
V of a prism
A
Cross section X depth
6
Q
V of a cone
A
1/3πr^2h
7
Q
V of a pyramid
A
1/3 of the prism
8
Q
SA of a circle
A
πr^2
9
Q
SA of a trapezium
A
1/2h(a+b)
10
Q
SA of a rhombus
A
1/2xy
11
Q
SA of a parallelogram
A
lb (it fits into a rectangle)
12
Q
Sum of interior angles in an n-sided polygon
A
180n-360
13
Q
Sum of exterior angles of a polygon
A
360
14
Q
Facts on similar triangles.
A
- SSS
- AAA
- SAS
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In proportion only
