Math · Topic 62 of 65
Pi
⭐ MasteredPi is the number you get when you divide the circumference of any circle by its diameter. It is about 3.14, and it never ends or repeats.
💡 Fun fact
People have used pi for thousands of years, and computers have calculated trillions of its digits.
All about Pi
Pi is the number you get when you divide the circumference of any circle by its diameter. It is about 3.14 and never ends or repeats.
Pi is used to calculate the circumference and area of circles.
🎮 Try it yourself!
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Real-life uses of Pi
- Calculating the distance around a wheel
- Working out the area of a circular pond
- Designing round objects
Frequently asked questions about Pi
What is pi?
Pi is the ratio of a circle’s circumference to its diameter, about 3.14.
Does pi end?
No. It is an irrational number with endless digits.