发布时间:2025-02-03 00:48:53
这不很简单,半圆式田径场的两个弯道长度之和,正好等于一个圆的圆周。跑道总长为200米,而直道是50米,那么两边直道总长为50*2=100米,所以两个半圆总长是100米。那么内突沿半径为
C=2∏(圆周率)r, 100=2*3.1415926*r,解得r=15.92米。
广东游泳运动员:”周嘉威”实在是太帅了,谁有他详细的资料或者清晰的照片啊
2025-02-03 00:48:53 2025-02-03 00:48:53朋友申请装修合同贷款银行需要把钱打到第三方朋友用我的账户作为第三方账户我需要承担什么责任么
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