## Circumference of a Circle

Find a way to approximate the circumference of a circle. What is the circumference of a circle with a radius of ‘1’?

Find a way to approximate the circumference of a circle. What is the circumference of a circle with a radius of ‘1’?

Move the pieces by touching the screen. You can see that the sum of the areas of small squares is equal to the area of large squares.

Measure the derivative value while moving the tilt measurement tool. You can change the shape of several mathematical functions by touching the screen.

How to calculate the area of a circle If you cut the circles and put them on each other, they gradually become a shape close to the rectangle. At this time, the horizontal length of the rectangle becomes half of…

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