Heron's Formula — Formula Sheet
Gujarat Board · Class 9 · Mathematics
3 formulas from Heron's Formula (Gujarat Board Class 9 Mathematics) on one page, grouped by topic. Includes Step 2 and Example 2.
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Formulas and Key Relations
Step-by-Step Application
Step 2
Calculate semi-perimeter s = (a+b+c)/2
Worked Examples and Applications
Example 2
Equilateral triangle with side 10cm gives area 25√3 cm²
Key relations
For right triangles, results can be verified using Pythagoras theorem (a² + b² = c²) and the traditional area formula (½ × base × height)
Full sheet with units and worked examples
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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