【入门】已知一个圆的半径，求解该圆的面积和周长

状态	递交者	时间	内存	语言	代码	递交时间
AC	Geometry	21ms	3.8 MiB	Python 3	92 Bytes	2026-8-8 13:34:26
AC	yangxiaoyu	21ms	3.7 MiB	Python 3	93 Bytes	2026-8-8 13:31:24
AC	hongkai	21ms	3.7 MiB	Python 3	76 Bytes	2026-8-1 14:00:11
AC	xuzhehao	22ms	3.8 MiB	Python 3	93 Bytes	2026-8-8 13:32:43
AC	liangshixiang	22ms	3.7 MiB	Python 3	91 Bytes	2026-8-8 13:37:06
AC	wangyicheng	22ms	3.8 MiB	Python 3	92 Bytes	2026-8-8 13:35:49
AC	renyiran	27ms	3.9 MiB	Python 3	92 Bytes	2026-8-8 13:37:43