How To Calculate The Circumference Of A Circle
Mathematics / Geometry
A circle is what you get if you take a straight line and bend it around so that its ends touch. You can demonstrate this by taking a piece of stiff wire and doing just that: bring the ends of the wire continue reading this fact

What Are Cubes And Cube Roots?
Mathematics / Algebra
The mathematical term 'cube' comes from the threedimensional shape of the same name. A cube shape has three dimensions of length, width, and height, all equal and at angles of 90 to each other. Put a continue reading this fact

Eratosthenes Measured Earth’s Circumference—Centuries Before Columbus Sailed
Mathematics / Geometry
Eratosthenes (c. 276 – 194 BC) was born more than 2200 years ago in the Greek city of Cyrene, now a city in the North African country of Libya. (The Greek Empire surrounded much of the Mediterranean S continue reading this fact
