Calculate the solid angle subtended by the periphery of an area of `1 cm^2` at a point situated symmetrically at a distance of 5 cm from the area.

Explanation

To calculate the solid angle subtended by the periphery of an area of \(1 \, \text{cm}^2\) at a point situated symmetrically at a distance of \(5 \, \text{cm}\), we can use the formula for solid angle \(\Omega\):

\[ \Omega = \frac{A}{r^2} \]

where:
- \(A\) is the area,
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