Final answer:
The question seems to pertain to finding the surface area of an unspecified figure with circular cross-sections, requiring use of areas of circles and considerations of significant figures.
Step-by-step explanation:
To find the surface area of the figure with given values of s and l, we must first understand what kind of figure we are dealing with, which is not clearly provided in the question.
Assuming the figure to be something with a circular cross-section such as a cylinder or a sphere, as that is what the provided formulas suggests, the calculations provided seem to refer to acquiring areas of shapes with circular components. However, since the actual figure is not described, we cannot provide a specific surface area.
For example, the formula A = πr² calculates the area of a circle with radius r. If the figure was a sphere, to find the surface area, you would use the formula 4πr².
The steps mentioned in the question about calculations with significant figures highlight the importance of paying attention to the precision of the given data when performing calculations. It is also mentioned that the area of shapes can be estimated by comparing them to other geometric shapes such as squares or cubes, which offers a solid footing for understanding the relative size of the area.