If you have several different sized pizzas, you can compare their areas. So the area of a pizza is the length of the crust (circumference) divided by two times the distance from the edge to the middle (radius). Mathematicians use a special number called pi to calculate the circumference of a circle.
Here is the answer:
Expanded Form: 50 + 7 + 0.03 + 0.006
Word Form: Fifty plus seven plus zero point zero three plus zero point zero zero six
