Find the area of the cardboard required to make a closed box of length 25cm, 0.5m and height 15cm.

Explanation

To find the area of the cardboard required to make a closed box with given dimensions, we need to calculate the surface area of the box. The formula for the surface area \( A \) of a closed box (cuboid) is given by:

\[ A = 2(lw + lh + wh) \]

where:
- \( l \) = length
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