# MATHS

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- Created by: India
- Created on: 27-11-12 17:21

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- Maths Unit 2 student bk2
- converting measurements
- 10mm = 1cm
- 1000mm = 1m
- 100cm = 1m
- 1000m = 1km
- perimeter = distance all the way around

- NUMBER
- negative and fractional indices

- Shape and space
- Circles
- perimetre circumference
- 2?r

- Arcs and sectors
- area of sector
- x/360 X ?r squared

- Arc Length
- x/360 X 2 X ? X r

- area of sector
- Surface area
- ?r squared

- perimetre circumference
- Solids
- Any solid with parallel sides and a constant cross section is called a PRISM
- Volume of a prism = cross sectional area X height

- A CYLINDER is a prism with a circular cross section
- volume of a cylinder = ?r squared X height
- Curved surface area of a cylinder = 2?rh

- A CONE is a pyramid with a circular base
- volume of a cone = 1/3 X ?r squared X height
- curved surface area of a cone = ?rl (L STANDS FOR SLANT HEIGHT)

- Any solid with parallel sides and a constant cross section is called a PRISM
- SIMILAR SHAPES AND SOLIDS
- length scale factor = K
- these are only true if they are SIMILAR SHAPES
- area scale factor = k squared
- volume scale factor = k cubed

- these are only true if they are SIMILAR SHAPES
- area scale factor = k squared
- volume scale factor = k cubed

- length scale factor = K

- Circles
- probability
- mutually exclusive = P(A) + P(B)
- mutually exclusive = e.g. a light cannot be both off and on.

- independent events = P(A) X P(B)
- independent is when events dont directly effect one another

- READ THE QUESTION, DOES IT SAY REPLACED?

- mutually exclusive = P(A) + P(B)

- converting measurements

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