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Should you ever order a personal-sized pizza from Pizza Hut? Pizza Hut pizzas come in large, medium, and personal. While the smallest size is the least expensive, it costs the most per square inch and is over half crust!

In this lesson, students calculate circle areas to compare the unit costs of different sized pizzas, find the percent of pizza that is tasty inside vs. crust, and debate whether it’s ever a good idea to order a personal-sized pizza from Pizza Hut.

Students will

  • Calculate the area of a circle
  • Use geometric models to solve real-world problems
  • Use unit rates or proportional reasoning to determine the best deal

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