Chapter 12 · Class 9 CBSE · Formula Sheet

Heron's Formula Formulas — Class 9 CBSE

Apply Heron's formula to find areas of triangles and quadrilaterals split into triangles.

Key Formulas

Semi-perimeter

s = \dfrac{a + b + c}{2}

Heron's Formula

A = \sqrt{s(s-a)(s-b)(s-c)}

Worked Examples

1Using: Application

Apply the key formula from this topic to a sample problem.

Step 1: Identify the formula.

Step 2: Substitute the values.

Step 3: Simplify to get the answer.

Answer: See solution above

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More Class 9 CBSE Formulas

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Frequently Asked Questions

How many formulas are in Class 9 CBSE Heron's Formula?+
There are 2 formulas in the Heron's Formula chapter for Class 9 CBSE. Each formula is essential for solving problems in this topic.
How to remember Heron's Formula formulas easily?+
Practice regularly with worked examples, group related formulas together, and use SparkEd's interactive practice mode to reinforce your memory through problem-solving.
Are these Heron's Formula formulas enough for exams?+
Yes, these formulas cover the complete CBSE Class 9 syllabus for Heron's Formula. Practice applying them to different types of questions for full exam readiness.

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