Math Antics - Circles, What Is PI?

Circles are all around us, from wheels to cookies, and pi helps us understand them better.

Imagine you have a round pizza. If you measure the distance around the edge of the pizza, that's the circumference. Now, if you measure across the middle of the pizza (from one side to the other), that’s the diameter. No matter how big or small your pizza is, if you divide the circumference by the diameter, you always get about 3.14, and that number is called pi.

Think of a bicycle wheel. If you know the size of the wheel (its diameter), you can figure out how far the bike travels with each turn of the wheel. That’s because the distance covered in one full turn is equal to the circumference, and that's where pi comes into play.

Pi isn’t just for pizzas and wheels, it helps us understand anything round, from planets to bubbles. It’s like a secret code that connects all circles together! Circles are all around us, from wheels to cookies, and pi helps us understand them better.

Imagine you have a round pizza. If you measure the distance around the edge of the pizza, that's the circumference. Now, if you measure across the middle of the pizza (from one side to the other), that’s the diameter. No matter how big or small your pizza is, if you divide the circumference by the diameter, you always get about 3.14, and that number is called pi.