Today Wednesday we celebrate **Pi Day 2024.** This dayÂ is an annual celebration of the mathematical constant pi (Ï€). Pi is the ratio of a circle’s circumference to its diameter, and it is approximately equal to 3.14159. Pi Day is celebrated on March 14th because the first three digits of pi are 3, 1, and 4.

## History of Pi Day

The first Pi Day was celebrated in 1988 by Larry Shaw, a physicist at the Exploratorium in San Francisco. Shaw chose March 14th for the celebration because it is the date of Albert Einstein’s birthday. Einstein was a theoretical physicist who developed the theory of relativity. He is also known for his massâ€“energy equivalence formula, E = mc2.

Pi Day has since become a popular event celebrated by mathematicians, scientists, and engineers around the world. People celebrate Pi Day in many ways, including eating pie, reciting pi digits, and participating in pi-themed activities.

## What is Pi?

Pi is a mathematical constant that is approximately equal to 3.14159. It is the ratio of a circle’s circumference to its diameter. Pi is an irrational number, which means that it cannot be expressed as a fraction of two integers. Pi is also a transcendental number, which means that it is not the root of any polynomial equation with rational coefficients.

Pi has been known for thousands of years. The first recorded calculation of pi was made by the Chinese mathematician Liu Hui in the 3rd century AD. The Greek mathematician Archimedes calculated pi in the 2nd century BC.

Pi has many applications in mathematics, science, and engineering. It is used to calculate the area and circumference of circles, the volume of spheres, and the length of curves. Pi is also used in physics, engineering, and astronomy.

## Why do brands run promotions on Pi Day?

Pi Day is an annual celebration of the mathematical constant pi (Ï€). Pi is the ratio of a circle’s circumference to its diameter, and it is approximately equal to 3.14159. Pi Day is celebrated on March 14th because the first three digits of pi are 3, 1, and 4.

There are a few reasons why brands run promotions on Pi Day. First, Pi Day is a great opportunity to increase brand awareness. By offering discounts and promotions, brands can reach a wider audience and generate excitement about their products or services.

Second, Pi Day is a fun and engaging way to connect with customers.

Finally, Pi Day is a great way to boost sales. By offering discounts, brands can encourage customers to purchase their products or services.

### Some examples of Pi Day promotions

Here are a few examples of Pi Day promotions that brands have run in the past:

- Pizza chains: Pizza chains often offer discounts on pizza pies on Pi Day. For example, California Pizza Kitchen: CPK Rewards members can get a $3.14 pizza with a $25 minimum purchase.
- Pie shops: Pie shops also offer discounts on pies on Pi Day. For example, get $3.14 off select Marie Callenderâ€™s frozen multiserve dessert pies when shopping online at select retailers
- Clothing retailers: Some clothing retailers also offer discounts
- Tech companies: Some tech companies also offer discounts on Pi Day.

Pi Day is a great opportunity for brands to increase brand awareness, connect with customers, and boost sales. By offering creative and engaging promotions, brands can make Pi Day a fun and memorable experience for their customers.

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