In honor of international Pi day (03-14-16 = 3.1416 = Pi to the ten-thousandths place) I am doing a Spherical Hamburger blog since many interesting properties of spheres can be calculated using the mathematical constant Pi:

Sphere where r = radius of sphere
By MarinaVladivostok – Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=27570340 Continue Reading