Equations/Formulas Flashcards
(14 cards)
1
Q
Arc length
Arc length =
A
(angle/360) x 2 π r
2
Q
Area of a sector
Area of sector =
A
(angle/360) x π r^2
3
Q
Area of a circle
Area of circle =
A
π r^2
4
Q
Circumference of a circle
Circumference =
A
2 π r
5
Q
Surface area of cyclinder
Surface area of cyclinder =
A
2 π r^2 + 2 π r x h
6
Q
Volume of a pyramid/cone
Volume of pyramid/cone =
A
1/3 Area of base x height
7
Q
Volume of sphere
Volume of sphere =
A
4/3 π r^3
8
Q
Surface area of sphere
Surface area of sphere =
A
4 π r^2
9
Q
Surface area of cone
Surface area of cone =
A
π r^2 + π r l
10
Q
Frequency density
frequency density =
A
frequency / class width
11
Q
Area of triangle
Area =
A
1/2 x a x b x sinC
12
Q
Sine rule
Sine rule for finding a side =
A
a/sinA = b/sinB = c/sinC
13
Q
Sine rule
Sine rule for finding an angle =
A
sinA/a = sinB/b = sinC/c
14
Q
Cosine rule
cosine rule =
A
a^2 = b^2 + c^2 - 2bc cosA
