drawing punch radius

例句：

1. 1. The drawing of the circle is a fundamental skill in mathematics.
   画圆是数学中的基本技能。
2. 2.The radius of the circle is the distance from the center to any point on the circumference.
   圆的半径是从圆心到圆周上任何一点的距离。
3. 3.The radius of the planet is the distance from its center to the surface of the planet.
   行星的半径是从其中心到行星表面的距离。