radius of a circle的意思|示意

The radius of a circle described by a crank, cam, or similar machine part.

半径曲柄 、 凸轮或类似机器部件形成的圆的半径.

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The percentage increase of radius of a circle is 30 %, find the percentage increase its area.

若一圆的半径增加了30%, 则此圆的面积增加了多少巴仙?

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So, that's actually a great circle meridian of length, well, I mean, well, the radius is the radius of the sphere.

路程就是个大圆，我的意思是，这个圆的半径是球的半径。

That is a circle of radius 1. That's the unit circle.

是一个半径为1的圆，那是单位圆。

The radius of a circle is 4cm, how many square centimeters is its area?

一个圆的半径是4厘米，它的面积是多少平方厘米？