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Pizza Hut pizzas come in three sizes: large, medium and personal. Which size is the best deal, and is it ever a good idea to buy the personal?

In this lesson, students calculate the area of each pizza to determine how much each square inch costs. They also calculate the percent of each pizza that’s the delicious inside, and the part that’s crust. Did you know that a personal pizza is 56% crust? Shouldn’t you just buy breadsticks?!

Students will

  • Calculate the area of various pizzas (and rings of crust) when given the diameter.
  • Calculate the price per square inch to compare value across pizza sizes.

Before you begin

Students will use formulas for circumference and area of a circle. You can introduce them as a needed tool in the context of the lesson if needed, though it may be more comfortable if students are already familiar with these.

Common Core Standards

Content Standards
Mathematical Practices