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An 8x8 rectangle is either a square, all of whose sides are 8 units long or it can be a rectangles whose opposite sides are 8 units long - but in different measurement units: for example, a rectangle whose sides are 8 centimetres and 8 metres.
They were using different units of measurement. For example, 8 cm is equal to 3 inches approx.
It could refer to the area of a rectangle that is 55 units long and 6 units deep.
You can use astronomical units or light years.
The units of measurement make no difference to the properties of an object. A line that is 2.54 centimetres long or 1 inch long remains exactly the same length - whether you choose to call its length 1 inch or 2.54 centimetres is totally irrelevant.
Because it takes too long to spell out the value in words!
The US measurement system is based on the English system, or imperial units, though England has now long since converted to SI.
KB is a unit of storage used in computers, known as kilobytes. Minutes is a length of time, and since the two are completely separate, you cannot determine how long 3000 kilobytes is in minutes. They are two different measurement units.
Perimeter = 38+17+38+17 = 110 units of measurement
A non standard measurement is one in which the units are not normally used. This would be like saying something is four palms long, a palm equaling three inches.
how long can the football go and like what happens in different throws
Meters; for larger distances or sizes, kilometers. In astronomy, the following non-SI units are often used: astronomical units; light-years; parsecs.