Step-by-step explanation:
To solve this problem, we need to consider the shortest path for the beetle to travel from point A to point B while following the perimeter of the cube. Since the beetle can climb up or across the cube's sides, it can traverse the edges of the cube.
Given:
- Time taken to travel around the bottom perimeter of the cube: 4 minutes
1. To find the minimum time for the beetle to travel from point A to point B:
- The shortest path from point A to point B follows the bottom perimeter for 3 edges and then climbs up the vertical edge to reach point B.
- Since each edge takes 4 minutes to traverse, and there are 3 edges to traverse horizontally, the time taken for horizontal traversal is 3 * 4 = 12 minutes.
- Additionally, the beetle needs to climb up one vertical edge, which also takes 4 minutes.
- Therefore, the minimum amount of time for the beetle to travel from point A to point B is 12 minutes (horizontal traversal) + 4 minutes (vertical traversal) = 16 minutes.
2. To determine the number of different solutions:
- There is only one shortest path for the beetle to travel from point A to point B, as described above.
- Therefore, there is only one solution.
In summary:
1. Minimum time for the beetle to travel from point A to point B: 16 minutes
2. Number of different solutions: 1