Weird Math sets out to “reveal the strange connections between math and everyday life.” The book fulfills that laudable goal, in part. At times, teenage math prodigy Agnijo Banerjee and his tutor, ...

Corrected: An earlier version of this Commentary illustration included an incorrect math formula. The correct formula for calculating the area of a circle is A=πr^2. When I was a kid, I hated math. I ...

Divide any circle’s circumference by its diameter and you get pi. But what, exactly, are its digits? Measuring physical ...