840 square millimeters or 1.3 square inch.
28 multiplied by 30 equals 840.
Twenty-eight multiplied by thirty (28x30)
Centimeters. It is large enough (long enough) that millimeters are a bit small.
9 millimeters
-- about 0.063 inch -- a hair more than the thickness of a dime
600 x 400
5.5 millimeters . . . . . I've had worse. 5.5 inches . . . . . Look out!
The easiest way to do this is to measure a large amount of paper sheets and to divide it. I have already done so the average is 0.049 millimeters per sheet.
either, or kilometres or micrometres. It all depends on how large the length is.
1 meter = 1000 millimeters 1 millimeter = 0.001 meter
There are 30 Millimeters in 30 Millimeters.
4.4 millimeters = 4.4 millimeters.