# Visualizing volumes by known cross section

This applet will help you to visualize what's going on when we build a solid from known cross sections.
The "X" slider allows you to move the single cross section along the interval [0,1]
The "n" slider allows you to choose how many of each cross section will be displayed.
You can choose to view squares, equilateral triangles, or semi-circular cross sections perpendicular to the x-axis. You can also click on the 3D graph and rotate and revolve the view to get a better sense of what the solid looks like.
If you enjoy this applet, check out my other Geogebra applets, and my YouTube channel, where you'll find Calculus and Geometry tutorial videos, as well as my Math Raps!
https://www.youtube.com/user/MikeDobbs76

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