Pi

Pi = 3.1415926

You can remember the value of Pi (3.1415926) by counting the letters in each of the following words:

 May I have a large container of coffee?

I've eaten a lot of pies (π) so, may I have a large container of coffee?

3.1415926

May – 3 letters

I – 1 letter

Have – 4 letters

A – 1 Letter

Large – 5 letters

Container – 9 letters

Of – 2 letters

Coffee – 6 letters