Square Root Day 2018 is on Wednesday, April 4, 2018: what is square root day?

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Wednesday, April 4, 2018 is Square Root Day 2018.

Square root day is an unofficial holiday celebrated on days when both the day of the month and the month are the square roots of last two digits of the year. For example, the last square root day was march 3,2009[03/03/09].

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what is square root day?

Square Root Day is an unofficial holiday celebrated on days when both the day of the month and the month are the square root of the last two digits of the year. For example, the last Square Root Day was March 3, 2009 (3/3/09), and the next Square Root Day will be April 4, 2016 (4/4/16).

what is the square root of one dollar?

The square root of one is one, but the square root of one dollar is not one dollar.

To see that it cannot be one dollar, try the following

1 dollar = 100 cents

therefore by square rooting

1 dollar = 10 cents

oops!

What we forgot to do was square root the units, so we ought to say that the square root of a dollar is, say, one 'root-dollar'!

Don't worry too much about what the 'root-dollar' is, it is just the unit that squares to a dollar.

Therefore

1 root-dollar = 10 root-cents

is true!

Also on this date Wednesday, April 4, 2018...