讲讲这道题---Here is the extracted content from the image: **Question Stem:** 5. (圆锥体体积) 如图, 以直角三角形 ABC 的直角边 AB 所在直线为轴旋转一周, 所形成的几何体的体积是( ) cm³. 说明 *(Translation: (Volume of a Cone) As shown in the figure, rotate the right-angled triangle ABC around the line containing the right-angled side AB for one revolution. The volume of the formed geometric solid is ( ) cm³. Explanation)* **Options:** A. 37.68 B. 50.24 C. 113.04 D. 150.72 **Diagram Description:** * **Type:** Geometric figure (Right-angled triangle). * **Elements:** * A right-angled triangle labeled ABC. * The angle at vertex B is a right angle. * Side AB is oriented vertically, with length labeled "4 cm". * Side BC is oriented horizontally, with length labeled "3 cm". * Side AC is the hypotenuse. * A dashed vertical line passes through points A and B, indicating the axis of rotation. **Handwritten Annotations:** * A circled letter 'B' next to the options, indicating a selected answer. * Handwritten calculation near the diagram and options: "3×3.14×4×1/3 = 37.68 cm³". * The word "说明" is present, suggesting the following handwritten content is an explanation or calculation.