Why pizzas are round whereas pizza boxes are square ??

 First we will know why pizzas are round -----

1.  Bakers spin the pizza dough in air. So it takes circular shape.

2.  Heat spreads across circular pizza evenly.  Square pizza would have burnt corners and soggy middle.

3. Pizza was originated in Italy.  Italian ovens are round brick ovens.  Hence, pizza is also round  !!!

Why pizza boxes are square   -----

1.  Round boxes waste a lot of material to prepare and cost more.  Square boxes are cheaper to make  !!!

2.  Square boxes stack perfectly in delivery bags , cars and on shelves. Round boxes would roll and waste space.

3.  Square box gives extra space in corners.

THERE ARE ROUND PIZZA BOXES  !!!

               But they cost 30% more and don't stack well for delivery.