Heron’s Formula: Area of a Triangle

Heron’s Formula: Area of a Triangle

Heron’s Formula: Area of a Triangle 150 150 SchoolTutoring Academy

Heron’s formula is used to calculate the area of a triangle if all three sides are known. It is called “Heron’s Formula” after Hero of Alexandria who was a Greek Engineer and Mathematician.

According to Heron’s Formula, area of a triangle whose sides are a, b, and c is given as:

 

 

 

 

 

Example:

Find the area of a triangle whose sides are:

a = 5, b = 6, c = 7

s = (5 + 6 + 7)/2 = 18/2 = 9

A = sqrt[9(9 – 5)(9 – 6)(9 – 7)]

= sqrt[9(4)(3)(2)]

= sqrt(216)≈ 14.7

 

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