图形旋转扫过的阴影部分面积，虽是不规则图形，却很好求_哔哩哔哩

Name: %E5%9B%BE%E5%BD%A2%E6%97%8B%E8%BD%AC%E6%89%AB%E8%BF%87%E7%9A%84%E9%98%B4%E5%BD%B1%E9%83%A8%E5%88%86%E9%9D%A2%E7%A7%AF%EF%BC%8C%E8%99%BD%E6%98%AF%E4%B8%8D%E8%A7%84%E5%88%99%E5%9B%BE%E5%BD%A2%EF%BC%8C%E5%8D%B4%E5%BE%88%E5%A5%BD%E6%B1%82
Uploaded: 2025-07-17T18:20:38.819Z