Mental Maths (2020-21) class 9 chapter 11. Heron's formula Q. 19, 20 NCERT. part 10 Hindi/ English.

Dear students this video is for every students who read in class 9th. Please watch this video and learn how to solve Area of triangles by heron's formula. Please teach the poor students after learning. My whats app number is 8010099506. for question 1:-    • how to solve Heron's formula Mental Maths ...   for question 2:-    • Mental Maths (2020-21) class 9 chapter 11....   for question 3 and 4:-    • Mental Maths (2020-21) class 9 chapter 11....   for question 5 and 6:-    • Mental Maths (2020-21) class 9 chapter 11....   for question 7 and 8:-    • Mental Maths (2020-21) class 9 chapter 11....   for question 9 and 10:-    • Mental Maths (2020-21) class 9 chapter 11....   for question 11 and 12:-    • Mental Maths (2020-21) class 9 chapter 11....   for question 13 and 14:-    • Mental Maths (2020-21) class 9 chapter 11....   for question 15 and 16:-    • Mental Maths (2020-21) class 9 chapter 11....   for question 17 and 18:-    • Mental Maths (2020-21) class 9 chapter 11....   thanks for watching.