Surface Areas and Volumes — Formula Sheet
Gujarat Board · Class 9 · Mathematics
5 formulas from Surface Areas and Volumes (Gujarat Board Class 9 Mathematics) on one page, grouped by topic. Includes Relationship between height.
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Formulas and Key Relations
Surface Area of Right Circular Cone
Relationship between height, radius and slant height
l² = h² + r²
Key relations
Curved Surface Area = πrl and Total Surface Area = πr(l + r).
Surface Area of Sphere = 4πr².
For hemisphere
Curved Surface Area = 2πr² and Total Surface Area = 3πr².
Volume = (1/3)πr²h.
Full sheet with units and worked examples
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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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