Maths equations Flashcards
1
Q
Arc length?
A
radius x θ
2
Q
Circumference of a circle?
A
2 x pie x radius
3
Q
Area of a circle?
A
pie x radius^2
4
Q
Curved surface area of cylinder?
A
2 x pie x radius x height
5
Q
Surface area of a sphere?
A
4 x pie x radius^2
6
Q
Area of a trapezium?
A
0.5 x (a + b) x height
7
Q
Volume of a cylinder?
A
pie x radius^2 x height
8
Q
Volume of a sphere?
A
4/3 x pie x radius^3
9
Q
Pythagoras theorem?
A
a^2 = b^2 + c^2
10
Q
Cosine rule?
A
a^2 = b^2 + c^2 - 2bc cosA
11
Q
Sine rule?
A
a/sinA = b/sinB = c/sinC
12
Q
Rule for log(AB)?
A
log(AB) = log(A) + log(B)
13
Q
Rule for log(A/B)?
A
log(A/B) = log(A) - log(B)
