3.1.1 Which letter indicates the area where the mine is located? 3.1.2 Which letter indicates the area where diggings are taking place? 3.1.3 Explain the issue regarding obstacles between points A and B - NSC Geography - Question 3 - 2021 - Paper 2

The letter indicating the area where diggings are taking place is A.

There is no obstruction or no high lying point between the two points A and B, allowing for a direct line of sight.

The vertical distance between point A and B is 38 m.

To calculate the actual distance, use the formula: Actual Distance = Map distance × Map scale. Given that the map distance is 5.5 cm and the scale is 1 cm = 500 m, the actual distance is:

$Actual Distance = 5.5 ext{ cm} imes 500 ext{ m/cm} = 2750 ext{ m}$.

The average gradient can be calculated using the formula:

ext{Average Gradient} = rac{ ext{Vertical interval (VI)}}{ ext{Horizontal equivalent (HE)}}.

Here,

ext{Average Gradient} = rac{38 ext{ m}}{2750 ext{ m}} = rac{38}{2750} ext{ m/m} \ = 1 : 72.36.

Thus, the average gradient is approximately 1:72.