# Maths 1-9 course Equations

how do you work out the area of a rectangle?
length x width
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how do work out the area of a parallelogram?
base x height
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how do work out the area of a triangle?
1/2 x base x height
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how do you work out the area of a trapezium?
1/2 (a+b) x height
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how do you work out the circumference?
2 x π x radius OR π x diameter
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how do you work out the area of a circle?
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what is the sine rule?
SinA/a = SinB/b = SinC/c
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what is the Cosine rule?
a²=b²+c²=2bc CosA
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what is the area of the triangle using trigonmetery?
1/2 abSinC
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how do you work out speed?
distance/time
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how do you work out density?
mass/volume
11 of 18
how do work out pressure?
force/area
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how do you work out the area of a cuboid?
length x width x height
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how do you work out the area of a prism?
(area of cross section) x lenth
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how do you work out the area of a cylinder?
(πr²) x height
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how do you work out the area of a pyramid?
1/3 x base area x height
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what is the formulae for pythagoras?
a²+b²=c²
17 of 18
what is a way to remember trigonometry?
SOH CAH TOA
18 of 18

## Other cards in this set

### Card 2

#### Front

how do work out the area of a parallelogram?

base x height

### Card 3

#### Front

how do work out the area of a triangle?

### Card 4

#### Front

how do you work out the area of a trapezium?

### Card 5

#### Front

how do you work out the circumference?