Each edge of a cube is increased by 50%. Find the percentage increase in the surface area of the cube.

Explanation

To find the percentage increase in the surface area of a cube when each edge is increased by 50%, we can follow these steps:

### Step 1: Define the initial edge length
Let the initial edge length of the cube be \( l \).

### Step 2: Calculate the initial surface area
The formula for the surface area \( A_1 \) of a cube is given by:
\[
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