Find the percentage increase in the area of a triangle if its each side is  doubled.

Explanation

To find the percentage increase in the area of a triangle when each side is doubled, we can follow these steps:

### Step 1: Define the sides of the triangle
Let the sides of the triangle be \( A \), \( B \), and \( C \).

### Step 2: Calculate the semi-perimeter of the triangle
The semi-perimeter \( S \) of the triangle is given by the formula:
\[
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