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### Circumference of a circle

How to calculate the circumference of a circle.
The circumference of a circle can be calculated using the formula:
2 x π x r
Where π (pi) = approx 3.14
and...

### Building services engineering intro

What is Building Services Engineering?
Building services engineering is the design, installation and maintenance of almost every mechanical or electrical aspect within a building. Most...

### Properties of Air at atmospheric pressure

The properties of Air have been tabulated below, listed by temperature in ascending order. The properties listed are density, viscosity specific heat capacity, thermal...

### 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...

### Volume of a Cylinder

You can calculate the volume of a cylinder using the following formula
V = ∏ x r2 x H
Where:
V = Volume
Π = Pi (3.142 approx)
r = radius
H...