A forest of 10 km by 10 km is cut into equal square pieces…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A forest of by is cut into equal square pieces. The edge of every piece is wide. (The edge effect is not in the NEET syllabus, but A-Level and IB use it.)
- What per cent of the forest is core when it is cut into by pieces?
- What per cent is core when it is cut into by pieces?
- The edge is only wide, and the forest is cut into by pieces. What per cent is core?
Need a reminder? The key ideaShow
The evil quartet: habitat loss and fragmentation, over-exploitation, alien species invasions, co-extinctions. A piece of forest has an edge, which has the conditions of the open land, and a core. For a square piece of side with an edge of width , the core is a square of side (not in the NEET syllabus).
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Given. Forest by . Edge .
Plan. Core share , where is the side of a piece.
Step 1. (a) . , which is per cent.
Step 2. (b) . , which is per cent.
Step 3. (c) and . , which is per cent.
Answer: per cent; per cent; per cent.
Check. The total area is the same in all the cases, but the core falls as the pieces get smaller.
Discussion (0)
Log in to join the discussion.
Loading…