Geometry

Question Analysis

Given the side lengths , ,  of a triangle, since all three side lengths are known, the task is to apply Heron's formula to calculate its area.

 

Key Concept Explanation

Heron's Formula: The area  of a triangle with side lengths , ,  is calculated by , where  is the semi-perimeter. This formula is used when the lengths of all sides of a triangle are given.

 

Step - by - Step Solution

1. Calculate the semi - perimeter :

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