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How does one calculate the space to mounting height ratio for lighting?
Half the distance from the wall to the centre of the luminaire, as the distance there is between luminaires. e.g if the distance between luminaires horizontally is 3m then the distance to the centre of the luminaire from the wall is 1.5m. If the distance between the luminaires vertically is 5m then the distance to the centre of the luminaire from the wall is 2.5m
What is the distance between the centre and a point on the circle?
The length of the radius.
What is distance between the center and edge of circle called?
The radius is from the centre to the rim of a circle.
What is the difference between perimeter and diameter?
The perimeter or circumference is the distance around a circle whereas the diameter is the distance across a circle through its centre.
What is the different between measures of center and measures of variability?
The answer lies in the question! The first lot measure where the centre of a distribution or observation lies while the second lot are a measure of the distance of individual observations from the centre.
