Ya Gcse Flashcards
1
Q
Final amount
A
Final amount= (starting amount) x (multiplier)^n
2
Q
M d v
A
M
D x v
3
Q
If t and x directly proportional
A
Y= kx
4
Q
If y and x are inversely proportional
A
Y= k/x
5
Q
Corresponding angles
A
Equal
6
Q
Alternate angles
A
Equal
7
Q
Vertically opposite angles
A
Equal
8
Q
Exterior angle is regular polygon
A
360/n
9
Q
Area of parallelogram
A
bh
10
Q
Area of trapezium
A
1/2(a+b)h
11
Q
Volume of cylinder
A
πr^2h
12
Q
Surface area of cylinder
A
2 πr^2 + 2 πrh
13
Q
Area of sector
A
X/360 x πr^2
14
Q
Arc length
A
X/360 x2 πr
15
Q
Curved surface area of a cone
A
πrl
16
Q
Total surface area of cone
A
πrl + πr^2
17
Q
Surface area of a sphere
A
4 πr^2
18
Q
Scale factor
A
Enlarged length / original length
19
Q
Sine rule
A
a/ sin A = b/sin B = c/sin C
20
Q
Cosine rule
A
a^2= b^2 + c^2 -2bc x cosA
21
Q
Pythagoras in 3d shape
A
D^2 = a^2 + b^2 + c^2
22
Q
U
A
Means or
23
Q
n
A
Means and
24
Q
Histograms
A
Area of bar= frequency Frequency density= frequency/class width
