Cylinders with Unknown Dimensions

This Instructional Activity is a part of the Lesson 14, Unit 5, Grade 8. The purpose of this activity is for students to use the structure of the volume formula for cylinders to find missing dimensions of a cylinder given other dimensions. Students are given the image of a generic cylinder with marked dimensions for the radius, diameter, and height to help their reasoning about the different rows in the table. While completing the table, students work with approximations and exact values of pi as well as statements that require reasoning about squared values.