Units 1-10 list of formulae Flashcards
1
Q
Surface area of a sphere.
A
4PIr²
2
Q
Surface area of a cone.
A
PIr² + PIrl
3
Q
Surface area of a cylinder.
A
2PIrh + 2PIr²
4
Q
Volume of a sphere.
A
4/3PIr³
5
Q
Volume of a cone.
A
1/3PIr²h
6
Q
Area of a circle
A
PIr²
7
Q
Area of a sector
A
theta/360 x PIr²
8
Q
Circumference
A
2PIr
9
Q
Arc length
A
theta/360 x 2PIr
10
Q
Pythagoras
A
a² + b² = c²
11
Q
SOHCAHTOA
A
sin = o/h cos = a/h tan = o/a
12
Q
Quadratic formula
A
-b+/-sqrtb²-4ac / 2a
13
Q
What is the equation for the sine rule for a side?
A
a / SinA = b \ SinB = c / SinC
14
Q
What is the sine rule for finding an angle?
A
SinA / a = SinB / b = SinC / c
15
Q
What is the cosine rule for finding a side?
A
a^2 = b^2 + c^2 - 2bc x cosA
