login
Counting Frogs on an Island
2025/07/21·StepFun can make mistakes, check important info.
0a6f88a0d2cd4eceb1ef5fa8cc1193ca~tplv-9xxiciwj9y-image.image
In the diagram you can see a very ragged island. Some of the frogs are sitting in the water. How many are sitting on the island?

To determine how many frogs are sitting on the island, we need to identify which frogs are inside the boundary of the island (i.e., inside the outline of the land) and which are in the water (outside the land boundary).

Step 1: Understand the island's boundary

The island's boundary is formed by the curved black lines. The area inside these curves represents the land, and the area outside these curves represents the water.

Step 2: Analyze the position of each frog

We will go through each frog and determine if it is sitting on the land (inside the boundary) or in the water (outside the boundary).

  1. The frog at the top-left: In the water (outside the boundary).
  2. The frog slightly below the top-left frog: On the island (inside the boundary).
  3. The frog in the upper middle: On the island (inside the boundary).
  4. The frog to the right of the upper middle frog: In the water (outside the boundary).
  5. The frog in the middle left: On the island (inside the boundary).
  6. The frog in the middle right: On the island (inside the boundary).
  7. The frog at the bottom-left: In the water (outside the boundary).
  8. The frog in the bottom middle: On the island (inside the boundary).
  9. The frog at the bottom-right: On the island (inside the boundary).

Step 3: Count the frogs on the island

From the analysis:

  • Frogs on the island: 6
  • Frogs in the water: 3

Final Answer:

\(\boxed{6}\)