How do I determine this information the value of the coin for the size that it takes up?
A. If you use the whole numbers, you’re getting the value per mm in terms of cents. If you use the decimal fractions, you’re getting it in terms of dollars. Your choice. B. An expression of the form X per Y means the result of dividing X by Y. In this case, you’re dividing value per mm meaning monetary value by size. Incidentally, the sizes you’re using are not clear. You seem to be multiplying the diameter by the thickness, which will produce a number proportional to the area of the edge of the coin, excluding the faces. For a more reasonable measure, see source for guidance on areas and volumes of cylinders (because coins are basically very flat cylindrical shapes). If you’re using a measure based on surface area, you’re computing value per square mm (mm^2). If you’re using a measure based on volume, you’re computing value per cubic mm (mm^3). The method you’re using produces value in relation to edge area, but with the square mm multiplied by a proportional constant (specifically, t
