The diagram illustrates a right circular cone-shaped mountain.

If you build a shortest distance track for a siteseeing train around the mountain, in which the track starts at point A and ends up at point B, the track will first go uphill, but then it will go downhill.

What is the length of the downhill track?

There are four answer choices:

200/√19
300/√30
300/√91
400/√91
только без решений с интернета

милана5555555    3   22.04.2020 08:55    1