>>12480519Suppose to slice the circle in many triangles, you take half of them and try to use them to fill the gaps and get a shape similar to a rectangle.
The height of the rectangle is equal to the circle radius, and the base is equal to half of the circonference.
>The circonference is equal to to pie times the radius 2?r>The rectangle's height is equal to the radius of the circle>The base of the rectangle is half the circonference.Half of the circonference is 2?r/2 = ?r
>The area of the rectangle is ?r times r, so the area of the rectangle is r2?That's the area formula of the circle.
