The length of a rectangle is 8 cm and the width is 4 cm. Draw the largest circle inside the rectangle. The radius of the circle is ____ cm. How many
一个长方形的长是8厘米，宽是4厘米，在长方形内画一个最大的圆，圆的半径是____厘米．多少
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<result>2</result>