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Home > A2C > Chapter 10 > Lesson 10.2.6 > Problem 10-152


Imagine a circle with a radius of 4 units and a center at . This circle is rotated around the x-axis, always staying the same distance from the axis. It sweeps out a three-dimensional figure. What shape is formed? Make a sketch.

It makes a torus (a doughnut).

Remember to make a sketch.