I have a roll of stickers for my job which contains a maximum of 915 stickers.
It is shaped like a torus (donut) or toilet paper roll with cardboard on the inside and a gap in the middle the interior has a diameter 3.25 inches including the cardboard.
The total diameter of a full roll of 915 is 8 inches.
2 + 6/16 inch of usable radius of sticker paper + sticker.
21.25 inch = 3 label stickers including the space between.

For 48.5 labels the label roll has a circumference of 11.5 inches and a usable radius of 7/32 inches.

I have to get a very accurate count of several partial rolls with various usable radii. (As in with about 1/2 a roll there is a radius of 1+3/16 inches which I will be measuring but I want the number of labels in the approximate half roll of sticker labels. (Labels look like a rectangle with an approximate length of 6.75 inches (with space in between each rectangle)

Thank you very much for your help

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