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Start Chapter QuizSurface Areas and Volumes Mind Map
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Curved surface area of a cylinder
highThe curved surface area of a cylinder is the area of only the side surface, excluding both circular bases.
If the question says only the side, label, cover, or curved part, use 2πrh and do not add the bases.
Total surface area of a cylinder
highThe total surface area of a cylinder is the area of its curved surface plus the areas of both circular bases.
When the cylinder is closed or all outer surfaces are mentioned, use 2πr(h+r).
Volume of a cylinder
highThe volume of a cylinder is the amount of space enclosed inside it.
For capacity or space inside a cylinder, always use πr²h and write cubic units.
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