At first sight, you might assume it’s 20% larger, but it’s actually much more.

It’s a simple mathematical concept, but is often overlooked. The area of a circular pizza is πr2. The π bit cancels out, so we can forget it, but the r2 bit is what matters. The pizzas have radii of 5 and 6 inches respectively. 5 2 =25; 62 =36. To get 36, you need to multiply 25 by 1.44. i.e it’s a 44% increase.

It’s always better to go for the larger pizza.

The same idea applies to things like my asshole. The difference between a 2.5″ asshole and a 3″ one is also 44%.