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CBSE class 9 Mathematics Chapter 12 Herons Formula notes in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides Herons Formula class 9 Notes latest chapter wise notes for quick preparation of CBSE board exams and school based annual examinations. Class 9 Mathematics notes on Chapter 12 Herons Formula are also available for download in CBSE Guide website.

## CBSE Guide Herons Formula class 9 Notes

CBSE guide notes are the comprehensive notes which covers the latest syllabus of CBSE and NCERT. It includes all the topics given in NCERT class 9 Mathematics text book. Users can download CBSE guide quick revision notes from myCBSEguide mobile app and my CBSE guide website.

## 10 Mathematics notes Chapter 12 Herons Formula

Download CBSE class 9th revision notes for Chapter 12 Herons Formula in PDF format for free. Download revision notes for Herons Formula class 9 Notes and score high in exams. These are the Herons Formula class 9 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter in minutes. Revising notes in exam days is on of the best tips recommended by teachers during exam days.

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**CBSE Class 09 Mathematics Revison Notes CHAPTER 12 HERON’S FORMULA**

**1. Area of a Triangle – by Heron’s Formula **

**2. Application of Heron’s Formula in finding Areas of Quadrilaterals**

- Triangle with base ‘b’ and altitude ‘h’ is

- Area of an isosceles triangle whose equal side is = square units
- Triangle with sides a, b and c

(i) Semi perimeter of triangle s =

(ii) Area=

sq. unit- Equilateral triangle with side ‘a’

Perimeter =

unitsAltitude =

units- Rectangle with length , breadth

Perimeter =

Area =

- Square with side

Perimeter =

unitsArea =

sq. unitsArea =

sq. units- Parallelogra with length , breadth and height

Perimeter =

Area =

- Trapezium with parallel sides ‘a’ & ‘b’ and the distance between two parallel sides as ‘h’.

## Herons Formula class 9 Notes

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