Heron’s Formula Class 9 Notes: Chapter 12

Heron’s formula class 9 notes provided here will be a handy tool for students as it will help them understand the concept clearly and gain insight into the important questions given in the chapter. With these notes, students can further increase the possibility of scoring higher marks in the exams. Chapter 12 deals with topics like;

  • Introduction To Heron’s Formula.
  • Area of Triangle Formula.
  • Application of Heron’s Formula in Finding Areas of Quadrilaterals.
  • Examples.
  • Important Questions.

Introduction

Heron’s formula also referred to as Hero’s formula is named in honor of Hero of Alexandria who was a popular Greek mathematician in the early 10 – 70 AD century. This formula is used to find out the area of a triangle when the length of three sides a, b, c, are given or known. What’s different about this formula is that there is no need to find other distances in a triangle early on in comparison to what the other formulas state. Heron’s formula is quite useful in cases where it is not possible to find the height of the triangle easily.

Heron’s Formula

The formula given by Heron about the area of a triangle is stated as;

Herons Formula Class 9 Notes Chapter 12

Examples Of Heron’s Formula

Herons Formula Class 9 Notes Chapter 12
Herons Formula Class 9 Notes Chapter 12
Herons Formula Class 9 Notes Chapter 12

Application of Heron’s Formula in Finding Areas of Quadrilaterals

Sometimes in farming lands, the shape of the fields are in quadrilaterals. In such cases, the quadrilateral area can be divided into triangular parts and then the formula for the area of the triangle can be used to calculate the sum. Students can look at the problem below:

Herons Formula Class 9 Notes Chapter 12

Important Questions

Herons Formula Class 9 Notes Chapter 12

 

We at Byju’s are providing Heron’s formula class 9 notes to helps students master concepts easily as well as study effectively.

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