Calculate the average mathematical gradient of a slope that rises 450m over a horizontal distance of 1.8 km.

I THINK that its 450/1.8. Hopefully someone will check this.

Maybe 450 / 1800, as one has to change everything

to metres (or km) ?

The answer should be 0.25...

To calculate the average mathematical gradient of a slope, you need to divide the change in vertical distance (rise) by the change in horizontal distance (run).

In this case, the slope rises 450m over a horizontal distance of 1.8 km. To calculate the gradient, you need to convert the horizontal distance to meters because both the rise and run should be in the same unit.

1 kilometer = 1000 meters

So, 1.8 km = 1.8 × 1000 = 1800 meters.

Now we can calculate the gradient:

Gradient = rise / run
= 450m / 1800m
= 0.25

Therefore, the average mathematical gradient of the slope that rises 450m over a horizontal distance of 1.8 km is 0.25.