The image shows a right-angled triangle with some labels. Analyze the geometric properties and any provided measurements.

Analysis of the Geometric Figure:

• The figure is a right-angled triangle, indicated by the square symbol at vertex L.
• The vertices are labeled L, N, and an unlabeled vertex at the right angle.
• There are measurements provided:
• The side LN is labeled as 18 cm.
• The side adjacent to the right angle (from L to the other vertex on the horizontal line) is labeled as 3 cm.
• There are additional markings and labels that are unclear or incomplete:
• A curved line and the letter 'S' near the right angle, possibly indicating an angle or a point of interest.
• A diagonal line with a label '1,6' next to it.
• A question mark next to 'N-2', suggesting a calculation or a problem to be solved related to vertex N.
• Text in Russian at the bottom right, which appears to be a question or a task, but it is cut off and difficult to read entirely. It starts with 'Вопросов' which translates to 'Questions'.

Incomplete Information:

The provided image contains elements of a geometry problem, but critical information is missing or unclear, such as the full text of the question and the meaning of some labels. Therefore, a complete mathematical solution cannot be provided without further context.