A formula, which is used to find the surface area of a triangle and any other shape of a triangle, when the lengths of its three sides are known. It can be applied to, as long as we know its three side lengths. The Heron’s formula is given as:
A = √s (s – a) (s – b) ( s – c)
where s = perimeter of a triangle = (a + b + c) / 2
The Heron’s formula was discovered between 10 – 70 AD by a Greek Engineer and Mathematician named Heron of Alexandria. Hence this formula has been named after the name of the discoverer.
Find CBSE Class 9 Maths Chapter 12 Notes
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Frequently Asked Questions on CBSE Revision Notes for Class 9 Maths Chapter 12 Heron’s Formula
Q1
If the height is given, how can a triangle’s area be calculated?
The formula to find the area of a triangle when height is given is
Area = ½ x Base x Height
Area = ½ x Base x Height
Q2
Who discovered Heron’s formula?
Heron’s formula was discovered by a Greek Mathematician and Engineer named Heron of Alexandria in 10-70 AD.
Q3
What are the uses of the CBSE Class 9 Maths Revision Notes?
The CBSE Class 9 Maths Revision notes is available in a chapter-wise format to help students revise the concepts calmly. It helps improve time management skills, which is important from the exam point of view.
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