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### Volume of a sphere

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Where
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Π = Pi (3.142 approx)
r...

### What is electricity?

Put simply Electricity is just the flow of free electrons from one atom to another.
Everything in our universe, including you, is made up of...

### Area of a Trapezium

How to calculate the area of a Trapezium.
It's very simple to calculate the area of a Trapezium, you just need to use the following...

### Area of a sector

The area of a sector can be calculated with the following formula:
If calculated in degrees:
A = (Θ ÷ 360) x (Π x r2)
If calculated in radians:
A...

### Specific heat capacity of materials

The specific heat capacity of materials ranging from Water to Uranium has been listed below in alphabetical order. Below this table is an...