A wire can form a circle with a diameter of 4 decimeters. If it can be formed into a largest square, what is the side length in decimeters? (take π=3.14)
一根铁丝可以围成一个直径是4分米的圆，如果把它围成一个最大的正方形，它的边长是多少分米．(取π=3.14)
<gadget id="calculator">4 / 4</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

<result>3.14</result>