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Course: Get ready for AP? Calculus?>?Unit 7
Lesson 8: Cavalieri's principle and dissection methodsApply Cavalieri's principle
Problem
Consider the following cylinder and cone.
Marcel tried to use Cavalieri's principle to show that the two figures have the same volume.
"The base areas are the same. Therefore, corresponding cross-sections have the same area. So the volumes must be the same."
What is the first mistake Marcel made?