NCERT Solutions for Class 9 Maths Chapter 12

NCERT Solutions for Class 9 Maths Chapter 12 Heron’s Formula Exercise 12.1 and Exercise 12.2 in English Medium or प्रश्नावली 12.1 and प्रश्नावली 12.2 in हिंदी मीडियम to study online or in PDF form to free download. All NCERT Solutions as well as Apps are in Hindi Medium and English Medium Free.

 Class 9: Maths – गणित Chapter 12: Heron’s Formula NCERT Solutions for Class 9 Maths Chapter 12

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9 Maths Exercise 12.1 Solutions

NCERT Solutions for Class 9 Maths Chapter 12 Heron’s Formula Exercise 12.1 is given below. See also Exercise 12.2 in English Medium or प्रश्नावली 12.1 and प्रश्नावली 12.2 in हिंदी मीडियम to study online. Visit to Class 9 Maths main page or move to Top of the page.   9 Maths Exercise 12.2 Solutions

NCERT Solutions for Class 9 Maths Chapter 12 Heron’s Formula Exercise 12.2 is given below. See also Exercise 12.1 in English Medium or प्रश्नावली 12.1 and प्रश्नावली 12.2 in हिंदी मीडियम to study online. Visit to Class 9 Maths main page or move to Top of the page.     9 गणित के प्रश्नावली 12.1 के हल

NCERT Solutions for Class 9 Maths Chapter 12 Heron’s Formula प्रश्नावली 12.1 is given below. See also प्रश्नावली 12.2 in Hindi Medium or  Exercise 12.1 and Exercise 12.2 in English Medium to study online. Visit to Class 9 Maths main page or move to Top of the page.   9 गणित के प्रश्नावली 12.2 के हल

NCERT Solutions for Class 9 Maths Chapter 12 Heron’s Formula प्रश्नावली 12.2 is given below. See also  प्रश्नावली 12.1 in Hindi or  Exercise 12.1 and Exercise 12.2 in English Medium to study online. Visit to Class 9 Maths main page or move to Top of the page.     Visit to Class 9 Maths page or move to Top of page

Important Formulae and Terms on Heron’s Formula
• Area of Triangle: The total space inside the boundary of the triangle is known as area of the triangle.
• Area of triangle = ½ × base × height
• Area of equilateral triangle: Let the side of an equilateral triangle be k. Then, area of an equilateral triangle = (√3/4) k². Square units and altitude = (√3/2) k units.
• Area of an isosceles triangle: Let B be the base and S be the equal sides of an isosceles triangle, then area of an isosceles triangle = [B√(4S² – B²)]/2 square units.
• Perimeter: Perimeter of a triangle is equal to the sum of its three sides. It is denoted by 2s, where s is the semi-perimeter of a triangle.
• Heron’s Formula: The formula given by Heron about the area of a triangle is known as Heron’s formula. According to this formula, area of triangle = √[s (s – a)(s – b)(s – c)], where a, b and c are three sides of the triangle and s is the semi-perimeter. This formula is also used for finding the area of quadrilateral. In quadrilateral, we join one diagonal to divide the quadrilateral into two triangles and then find the area of each triangle separately by Heron’s formula.

1 thought on “NCERT Solutions for Class 9 Maths Chapter 12”

1. ajay prajapati says:

your solution is very easier to understand