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英文数学选择题一道thecurvatureofacircleisdefinedtobethereciprocaloftheradiusofthecircleA.thecurvatureofacirclewithcircumference35πB.thecurvatureofacirclewithcircumference36π

题目详情
英文数学选择题一道
the curvature of a circle is defined to be the reciprocal of the radius of the circle
A. the curvature of a circle with circumference 35πB. the curvature of a circle with circumference 36π
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答案和解析
被定义为一个圆的曲率圆的半径的倒数
A.曲率圆的周长35π
B.曲率圆的周长36π
不晓得答案,只能翻译一下,知识还不具备,不好意思啊