WEST PALM BEACH, Fla. (AP) — Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, which is March 14 or 3/14 — the first three digits of an infinite number ...

Friday is Pi Day, a national celebration of the mathematical concept, which is the ratio of a circle's circumference to ... string of digits is a pixel-perfect representation of the first thing ...

The radius of the circle is 74 cm to the nearest cm. Practise pi and working out the circumference of circles with this quiz. You may need a pen and paper to help you with your answers.