A shape on a piece of paper has a perimeter.
A pair of numbers doesn't have a perimeter.
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Perimeter = 2(Length + Width)38 = 2*(7.5 + W)38 = 15 + 2W so 2W = 23 so that W = 11.5 cmA peculiar result since normally the length is larger than the width.
(38/4) sqrd
The dimensions are 4 units by 15 units
That depends what it is 38 percent of.
Perimeter = 15+10+15+10 = 50 units of measurement.