What is the formula to calculate slope?

The formula to calculate slope is derived from the relationship between the difference in elevation and the horizontal distance over which that change occurs. Specifically, the slope is defined as the ratio of the vertical change (difference in elevation) to the horizontal change (horizontal distance).

By using this ratio, you can determine the steepness or incline of a given area. Multiplying this ratio by 57.3 is important because it converts the result from a radian measure to degrees; this is essential when working in contexts where angles need to be expressed in degrees rather than radians.

Thus, the proper formulation for calculating the slope, which includes both the elevation change and the horizontal distance, results in a clear understanding of the terrain’s steepness. This calculation is critical for helicopter landing zone planning, as it helps assess the safety and feasibility of landing in specific areas.