## Rounded Pi Day

Last year on March 14 we celebrated the Moment of Pi.

3.141592653 = 3/14/15 9:26.53

This year we can celebrate Rounded Pi Day.

3.1416 = 3/14/16

Of course I cringe a bit at rounding Pi to only four digits.

But we do know that pies are rounded and not squared, or are they?   πr²

This evening I stopped by the grocery store to pick up a few pies for tomorrows special day. Here is a nice apple pie that I will take to work for dessert after lunch or perhaps just an afternoon snack.

For dinner tomorrow night I am planning on having Chicken Pot Pie. Of course the crust is the best part of this delicious pie.

I also thought about having pizza for dinner, but the pot pie won out in my decision making process.

There are more pie pictures in my post Happy Pi Day.

Perhaps I will watch IQ while eating my dinner. This is my favorite Albert Einstein movie and March 14 is Einstein’s birthday.

You can read more about my Einstein memories in my post Happy Pi Day II.

Yesterday I wrote a post about Giving One Back which was about losing an hour due to DST. Since I have been thinking about dates and calendars and the differences around the world it also made me think of another π related day.

If you are using the most common data format you are more likely to celebrate Pi Approximation Day. Do you know what day it is celebrated on?

In most of the world the date for tomorrow is written as 14/3/16. It is not so easy to see pi in this format. However, with July 22 written as 22/7 you can easily see that it is Pi Approximation Day.

Are you doing anything special for Pi Day?

Steven

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### 3 Responses to Rounded Pi Day

1. This is the day the Lord has made;
We will rejoice and be glad in it. (Ps. 118:24, NKJV)

Factoid: the sum of the square roots of 2 & 3 equal pi (about 3.14).

√2 ≈ 1.4142135623
+ √3 ≈ 1.7320508075 ≈
pi = 3.1415926535

Common Core Example (Florida, 6th Grade)

Understand the concept of Pi as the ratio of the circumference of a circle to its diameter.
Question: Calculate circumference of a circle with a radius of 1 mile.
Answer: C = 2πr = 2 x 3.14 x 1 = 6.28 miles.

I shared on FB with our granddaughters this application:

You’re in the middle of a circular island.
The distance to water in all directions = 1 mile.
About how many miles would you have to walk to go all the way around the island (I.e., it’s circumference)?
Answer: C = 2πr = 2 x 3.14 x 1 = 6.28 miles.

Darlene intuitively guessed “A little over six miles.”

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