生成讲题视频（要有声音）。要求：深入浅出，幽默风趣，适合小学三年级学生---**General Page Information:**
* **Title:** 巩固训练 7 (Consolidation Training 7)
* **Grade Level:** 三年级下(R) (Grade 3 Lower (R))
* **Page Number:** 34
---
**Question 3:**
* **Question Stem:**
王师傅从下面这块木板上锯下一个最大的正方形。剩下部分的周长是多少厘米？面积是多少平方厘米？
(Master Wang sawed off the largest possible square from the wooden board below. What is the perimeter of the remaining part in centimeters? What is the area in square centimeters?)
* **Chart/Diagram Description:**
* **Type:** Rectangle
* **Main Elements:**
* A rectangular shape.
* **Dimensions:**
* Length: 36 厘米 (36 centimeters)
* Width: 20 厘米 (20 centimeters)
---
**Question 4:**
* **Question Stem:**
龙一鸣在一张边长是 10 厘米的正方形纸中剪去一个长 4 厘米、宽 3 厘米的长方形。龙一鸣想到了三种方法，剩下部分的面积是多少？剩下部分的周长呢？
(Long Yiming cut a rectangle with a length of 4 centimeters and a width of 3 centimeters from a square paper with a side length of 10 centimeters. Long Yiming thought of three methods. What is the area of the remaining part? What is the perimeter of the remaining part?)
* **Chart/Diagram Description:**
* **Type:** Three geometric figures (Diagram 1, Diagram 2, Diagram 3) illustrating different cutting methods from an implied initial square.
* **Common Elements (Implied from text):** The original paper is a square with a side length of 10 厘米. The cut-out piece is a rectangle with length 4 厘米 and width 3 厘米.
* **Diagram 1 (图1):**
* **Shape:** An L-shaped figure formed by cutting a rectangular notch from one corner of the original square.
* **Labels:**
* Horizontal dimension of the cut-out section: 3 厘米 (3 centimeters).
* Vertical dimension of the cut-out section: 4 厘米 (4 centimeters).
* **Diagram 2 (图2):**
* **Shape:** A U-shaped figure formed by cutting a rectangular notch from the middle of one side of the original square.
* **Labels:**
* Horizontal dimension of the cut-out section: 4 厘米 (4 centimeters).
* Vertical dimension of the cut-out section: 3 厘米 (3 centimeters).
* **Diagram 3 (图3):**
* **Shape:** An L-shaped figure formed by cutting a rectangular notch from one corner of the original square, similar to Diagram 1, but with swapped dimensions for the cut.
* **Labels:**
* Horizontal dimension of the cut-out section: 4 厘米 (4 centimeters).
* Vertical dimension of the cut-out section: 3 厘米 (3 centimeters).
---
**Question 5:**
* **Question Stem:**
一个正方形花坛，边长 16 米。在花坛四周有一条 2 米宽的小路（涂色部分）。小路的面积是多少平方米？
(A square flower bed has a side length of 16 meters. There is a 2-meter wide path around the flower bed (shaded part). What is the area of the path in square meters?)
* **Chart/Diagram Description:**
* **Type:** Geometric figure, specifically two concentric squares.
* **Main Elements:**
* An inner square labeled "花坛" (flower bed). The side length of this flower bed is given as 16 米 in the question stem.
* An outer square, concentric with the inner square, which represents the flower bed plus the surrounding path.
* The path is the area between the inner and outer squares. The question states the path is 2 米 wide and is the "shaded part," though no shading is present in the image.