Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: What is the measurement of the cup? I need to know the diameter of the top and bottom of the cup.
Document: Often cleanup is a wipe with a paper towel. Be aware that you may need to reduce the cooking temperature of products per the product literature, and I have also found this to be true. Also, remove your baked goods immediately after cooking as I have had products be perfect when removed from oven, and if I let them cool in these pans, they burn on the bottom.
very sturdy and the coating feels slippery.i see some reviewers feel they don't have to use linersor grease but the manufacturer suggests grease.i tend to use butter not sprays since i think i read somewherethat they can cause surface damage.liners are really unnessary.the margin all around is larger then my old12 cup tin and therefore is easier grab. i like to hang things socould have come with a hole at the top...so i drilled one myself.
I am an avid baker, and have many USA pans, and was surprised that I don't like this pan. I think Bakers' Catalogue has similar versions. My oven is correctly callibrated, so I know it is not my oven, and I have been baking for over 40 years. But this pan seems to retain heat too much and my cupcakes are always overbrowned on the bottom. This has happened with greasing the pans, with double papering the pans. And it has happened with different batters.
These are durable pans which resist food sticking to them. The muffins are deeper so I have less mess on the top of the pan to deal with, if there is any at all. I recommend these pans to everyone!
After one use, they wiped up very easily. I used cupcake wrappers, but the top of the muffins did not stick to the pans at all. I just hope I can keep them from getting scratched up.
This company makes wonderful baking pans. I have also bought their bread pans and love them. The quality is top-notch. Super for gluten free baking. Nothing sticks.
I love USA Pans, they work really well and they are priced well for the quality you are receiving. I have the 9&#34; cake pans as well, and they are so beautiful, and with a parchment round on the bottom, they are as non-stick as you can get. They are awesome.
Be sure that you receive the pan as pictured. Amazon sent me one that didn't have the corrugated top or the silicone coating; instead it was a USA pan that is produced for one of their commercial customers. I eventually received the right muffin pan.
The USA cup cake pan its good material that it is in still in new condition and made with steel to still works in this year to.
I HIGHLY recommend ANY of the USA Pans.The quality of the pan is EXCELLENT .....AND the USA pans are made IN THE USA!!! YEAH!! !The 12 cup cupcake/muffin pan is no exception.....EXCELLENT results with baking cupcakes, muffins & rolls.I've been baking for many, many, years and this is the BEST!!! !
Answer: Top is 2-3/4 , bottom is 2-1/8 , and about 1-1/2 tall, hope this helps!