There is a square fish pond in Xinhua Farm, with a side length of 46 meters. The farmer is going to put up a guardrail around the fish pond. How long should the guardrail be?
新华农庄内有一个正方形的鱼塘，边长是46米．农庄主准备在鱼池四周围上护栏，护栏长应为多少米？
<gadget id="calculator">46 * 4</gadget>
<output>184</output>

<result>184</result>