https://r2.erweima.ai/mathbot/image/1724596018959udu5c76t.jpg

Let's calculate the perimeter for each shape shown in the image.

### 1. Triangle

**Sides:** 6 cm, 8 cm, 8 cm  
**Perimeter** = \(6 + 8 + 8 = 22\) cm

### 2. Square

**Side length:** 9 cm  
**Perimeter** = \(4 \times 9 = 36\) cm

### 3. Rectangle

**Sides:** 3 m and 3 m (both sides are equal)  
**Perimeter** = \(2 \times (3 + 3) = 2 \times 6 = 12\) m

### 4. Irregular Polygon (looks like a step or an L shape)

**Sides:** 4 m, 4 m, 8 m, 12 m, 4 m, and 4 m  
**Perimeter** = \(4 + 4 + 8 + 12 + 4 + 4 = 36\) m

Thus, the perimeters are:
- Triangle: 22 cm
- Square: 36 cm
- Rectangle: 12 m
- Irregular polygon: 36 m

Would you like any more details or have further questions?

### Related Questions:

1. How do you calculate the perimeter of an irregular polygon?
2. What is the difference between the perimeter and the area of a shape?
3. How can the perimeter be used in real-life applications?
4. How do you calculate the perimeter of a circle (circumference)?
5. What methods can be used to find the side lengths if only the perimeter is given?

**Tip:** When calculating the perimeter, make sure to add all the side lengths of the polygon, ensuring each measurement is accounted for correctly.

Learn how to calculate the perimeter of various shapes including triangles, squares, rectangles, and irregular polygons with detailed examples and formulas. Suitable for students in Grades 5-8.

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