To calculate gradient in m/km, %, and ratio.
Let's look at how to calculate gradient which is a measurement of the steepness of the land or simply slope. 
Formula Rise =
Change in the Vertical Distance 
Example Calculate the gradient from A to B in m/ km, %, and ratio. Calculating The Rise 1) Metres / km (Note: Typically in this course,
you will round the m / km to the nearest whole number.) 2) Percentage Rise = 120 m [Recall : 1 km = 1000 metres] Therefore, 2.01 km = 2010 metres. Rise = 120 m Divide the numerator (top) by the denominator (bottom) and multiply by 100 to get a percentage. Rise = 120
m Percentage is often used to express gradient on road signs which is critical information for truck drivers. 3) Ratio Reduce the fraction by dividing the top and bottom by the top number. Rise = 120
m / 120 = 1 Therefore, 1:16.8 (Note: Typically in this
course, you will round the ratio to the nearest first decimal.) 
Assignment Work

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