-
地球的半径是多少?
What is the radius of the earth.
youdao
-
一个圆的半径是4厘米,它的面积是多少平方厘米?
The radius of a circle is 4cm, how many square centimeters is its area?
youdao
-
一个圆的半径是4厘米,它的面积是多少平方厘米?
The radius of a circle is 4cm, how many square centimeters is its area?
youdao