English Task

Application of advanced alculus in overcoming natural disasters in the form of a volcanic eruption
  Mount Gerandong suddenly erupted, Arif family on the slopes of the mountain not far from the mountain top and no access to transportation that allows him to go quickly from the area. Arif has a simple contour map that he created while walking with his family in the surrounding mountains. Here is the contour map.

So if we see the contour map depicted what should be done by Arif family to be safe from the volcano eruption, or at least reduce the risk of lava from the volcano?
Answer;

From the contour map can be seen that Arif's house is very likely to be exposed lava flow or lava because the house is located on the side of the steep slopes of the mountain. So one thing that can be done by Arif and his family are the leading places in the region C or D because the area is exactly what is not possible flowed by lava. This is because the nature of the lava which is similar to water that is flowing into the lower place. Lava will quickly go to the home Arif and slower to the point C or D is not a high point but the area is located in a curve that may not be exceeded by the lava flow. If the lava is flows  too much so that the whole mountain passes then it is likely Arif family will not survive. But if not then it is likely that area will not be missed are the C and D so that Arif and his family survived. At least the action could reduce the risk of Arif families affected by lava flows.