The average gradient the slope marked L-K is approximately

Answer Details

To determine the approximate gradient of the slope marked L-K, we need to know the vertical rise and horizontal run of the slope. Since we don't have that information, we can estimate the gradient by using the average slope of the entire hillside.
From the figure, we can see that the hillside rises from about 25m to 480m over a horizontal distance of about 1700m.
Gradient = vertical rise / horizontal run
Therefore, the gradient of the hillside is approximately (480-25)/1700 = 0.255.
To estimate the gradient of the slope marked L-K, we can compare it to the average gradient of the hillside. From visual inspection, the slope marked L-K appears steeper than the rest of the hillside. Therefore, we can estimate the gradient of the slope marked L-K to be about 1:19.