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Flashcards in Ya Gcse Deck (24)
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1

Final amount

Final amount= (starting amount) x (multiplier)^n

2

M d v

M
D x v

3

If t and x directly proportional

Y= kx

4

If y and x are inversely proportional

Y= k/x

5

Corresponding angles

Equal

6

Alternate angles

Equal

7

Vertically opposite angles

Equal

8

Exterior angle is regular polygon

360/n

9

Area of parallelogram

bh

10

Area of trapezium

1/2(a+b)h

11

Volume of cylinder

πr^2h

12

Surface area of cylinder

2 πr^2 + 2 πrh

13

Area of sector

X/360 x πr^2

14

Arc length

X/360 x2 πr

15

Curved surface area of a cone

πrl

16

Total surface area of cone

πrl + πr^2

17

Surface area of a sphere

4 πr^2

18

Scale factor

Enlarged length / original length

19

Sine rule

a/ sin A = b/sin B = c/sin C

20

Cosine rule

a^2= b^2 + c^2 -2bc x cosA

21

Pythagoras in 3d shape

D^2 = a^2 + b^2 + c^2

22

U

Means or

23

n

Means and

24

Histograms

Area of bar= frequency
Frequency density= frequency/class width