body of radius

例句：

1. 1. The radius of thecircle is the distance from the center toany point on the circumference.
   圆的半径是从圆心到圆周上任何一点的距离。
2. 2. The volume ofa cylinder is the measure of its capacity, which is the amount of material itcan hold.
   圆柱体的体积是其容量的度量，即它能够容纳的物质量。
3. 3.The radius of the Earth's orbitaround the sun is approximately 69.5 million kilometers.
   地球围绕太阳的轨道半径大约为6950万千米。