The sum of length, breadth and depth of a cuboid is `19 c m` and the length of its diagonal is `11 c mdot` Find the surface area of the cuboid.

Explanation

To find the surface area of the cuboid given the sum of its dimensions and the length of its diagonal, we can follow these steps:

### Step 1: Define the variables
Let:
- Length = L
- Breadth = B
- Height = H

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