
Hi Marlyn, can you complete your question? It will help me to give a relevant answer.
Have you tried this?
https://tasks.illustrativemathematics.org/content-standards/HSG/MG/A/3/tasks/414

I found an answer from en.wikipedia.org
Paper cup - Wikipedia
A paper cup is a disposable cup made out of paper and often lined or coated with plastic or wax to prevent liquid from leaking out or soaking through the paper.
For more information, see Paper cup - Wikipedia

I found an answer from www.quora.com
What could be done to reduce the amount of plastic we use? - Quora
The easiest way to reduce your plastic usage is to find reusable alternatives for the plastic you typically ... We need plastics in our environment to keep our standard of living high. ... Each food bag should be used to store something else instead of throwing it out. ... Use paper bags (made from old news-papers, calendars etc.) ...
For more information, see What could be done to reduce the amount of plastic we use? - Quora