The road in the hilly region is made longer with several bends why?
Answers
Answer:
Explanation:
In the old times, when a road had to be built up a hill, the team of prospector would lead a donkey or a mule up the incline. The donkey would not go straight up along the shortest route, but would instinctively follow a path with a moderate incline, or grade, very similar to the maximum grade considered safe for roads (8 to 10%).
The prospectors would hammer stakes in the ground after the donkey and then measure the position of the stakes, draw all the points on a map and start drawing the road profile after joining the dots.
When the prospectors felt that the donkey had gone too far from the desired direction, or when an obstacle was met, they would turn the donkey around and it would continue climbing in the opposite direction with the same incline. The point where the donkey changed direction would be the location of a hairpin turn.