So you have a circle. What is the area of that circle? Surely everyone remembers that the area of a circle is: Where Pi (π) is of course the number and r is the radius of the circle. Where does ...

One of the oldest calculus problems, finding the area of a circle, can be visualized using a pizza. By dividing it up into ever smaller slices and laying them out next to one another, eventually ...

Look at the slices in the circle - each slice is "r," the radius, long on a side. Here is what we know before we start: The circumference of the circle is Pi times the diameter. And the diameter is 2 ...

I write about mathematics and its applications The area and perimeter ratios are shown ... π as the arc length of the upper half of the circle x² + y² = 1, the formula for which is (Funny ...