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Cylinder opening out with equations on a perspective grid
CYLINDER opening out showing equations for area of top and wall. The surface area of a cylinder is the area of the top and bottom plus the area of the wall. The area of the top is given by the formula for the area of a circle. So you need two of those (top + bottom). Then the area of the wall, which is the height (h) times the circumference (2?r). The volume of a cylinder is the area of the top times the height. This graphic shows the wall of the cylinder progressively opening out.
Illustration ID: CYLINDER-equations-unfolding-grid
Russell Kightley
Illustration size: 25.0 Mpixels (71.5 MB uncompressed) - 5000x5000 pixels (16.6x16.6 in / 42.3x42.3 cm at 300 ppi)
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