triangular piece of iron has the same area as a circular piece of iron with a radius of 50 mm. It is known that the base of the triangle is 250 mm long. What is the height of the triangle on the base in mm?
一张三角形铁片与一张半径是50毫米的圆形铁片的面积相等，已知三角形铁片的底边长250毫米，则这个三角形在这条底边上的高是多少毫米．
<gadget id="calculator">50 ** 2</gadget>
<output>2_500</output>

<gadget id="calculator">2 / 250</gadget>
<output>1/125 = around 0.008</output>

<gadget id="calculator">3.14 * 2_500 * (1/125)</gadget>
<output>62.8</output>

<result>62.8</result>