Question

A 12-inch diameter pizza has 22 calories per square inch.

About how many calories are in the entire pizza?

Use 3.14 for pi.

Select from the drop-down menu to correctly complete the statement.

Answer 1

To answer this question, we find first the area of the pizza (which is a circle) through the equation,
                                          A = πD²/4
where D is the diameter. Substituting the known values to the equation,
                                         A = π(12 in)²/4 = 113.04 in²
Then, we multiply the calculated value above to the amount of calorie per in².
                            amount of calorie = (113.04 in²)(22 cal/in²)
                             amount of calorie = 2486.88 cal
Therefore, each pizza will contain 2486.88 calories.