Food Value
Pizza area
Area of the circle from its diameter. Use 3.141592653589793 for pi if no constant is provided.
The Formula
A = pi x (d / 2) squared
Area of the circle from its diameter. Use 3.141592653589793 for pi if no constant is provided.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| A | Area | square inches | Edible pizza area, in square inches. |
| d | Diameter | inches | Pizza diameter as quoted on the menu. |
| pi | Constant | none | Ratio of circumference to diameter, 3.141592653589793. |
What Each Symbol Means
Asquare inches
Area
Edible pizza area, in square inches.
dinches
Diameter
Pizza diameter as quoted on the menu.
pinone
Constant
Ratio of circumference to diameter, 3.141592653589793.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to calculate a pizza area per dollar page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Calculate A Pizza Area Per Dollar, filed under Everyday Life. Every number the guide produces comes from substituting into this one line.