Find the percentage error in calculating the surface area of a cubical box if an error of 1% is made in measuring the lengths of edges of the cube.

Explanation

To find the percentage error in calculating the surface area of a cubical box when there is a 1% error in measuring the lengths of the edges of the cube, we can follow these steps:

### Step 1: Define the surface area of the cube
Let the length of an edge of the cube be \( x \). The surface area \( y \) of the cube is given by the formula:
\[ y = 6x^2 \]

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