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NCERT MATHS CLASS 9 EXERCISE 12.1 HERONS FORMULA

Heron's Formula





      Area of Triangle = 


 Where; s = Perimeter/2

 a,b and c are sides of triangle

 Perimeter of triangle = a + b + c

 This formula is useful where it is not possible to find the height of the triangle easily.

 For Example
Question 4 (exercise 12.1 NCERT maths class 9)

 find the area of triangle two sides of which are 18 cm and 10 cm ,perimeter of triangle is 42 cm.

 Solution:

 https://youtu.be/giKiVHfNZEQ

 https://youtu.be/Gs9ucpnxj1w

 Complete solution of Exercise 12.1 NCERT MATHS Class 9 CBSE  click on link below

 https://drive.google.com/file/d/1uaO8CTBzPiMxcRh1blawTfIyHM9Muq2X/view

FOR QUERY
https://docs.google.com/forms/d/e/1FAIpQLSentteKubswqiv08wxYqOZ8bJYRHTtA5eK6Dbv8W46UYbmtOg/viewform?usp=sf_link 

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