Surface areas and Volumes — Formula Sheet
Karnataka Board · Class 9 · Mathematics
3 formulas from Surface areas and Volumes (Karnataka Board Class 9 Mathematics) on one page, grouped by topic. Includes Relationship between.
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Formulas and Key Relations
Surface Area of Right Circular Cone
Relationship between dimensions
l² = r² + h² (Pythagoras theorem)
Key relations
A cone has curved surface area = πrl and total surface area = πr(l+r), where r is radius, l is slant height.
Sphere surface area = 4πr² and volume = ⁴⁄₃πr³.
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Sources & Official References
- Karnataka SSLC — kseeb.kar.nic.in
- Dept of Pre-University Education, Karnataka
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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