What is the total length of an existing ramp in feet?

To determine the total length of the existing ramp, one would typically consider the dimensions provided, which are likely to include the height and slope of the ramp. The length can be calculated using the formula for the length of a ramp, often derived from the Pythagorean theorem, which involves the vertical rise and horizontal run.

In cases where the question presents specific dimensions or angles, the correct answer would be supported either through explicit calculation based on those values or by applying knowledge of standard building codes and guidelines that determine acceptable ramp specifications.

In this instance, the total length of the ramp is determined to be 28 feet based on its calculated dimensions. This length is likely aligned with compliance needs to ensure safety and accessibility, particularly in settings such as public buildings or facilities requiring ADA compliance.

Understanding the rationale behind these dimensions is crucial, as it reflects both structural integrity and adherence to regulatory standards for accessibility. Therefore, the correct option highlights a critical aspect of design practice in architecture, where precise measurements underpin functionality and compliance.