The side length of a square lawn is 70 meters. Lele runs a lap along the grass every day, how many meters does he run every day?
一块正方形草地的边长是70米．乐乐每天沿草地跑1圈，每天跑多少米？
<gadget id="calculator">70 * 4</gadget>
<output>280</output>

<result>280</result>