A conical wheat pile covers an area of 12m**2 and is 2m high. Spread the wheat pile on the ground to form a rectangular parallelepiped with a square bottom. The height of this rectangular parallelepiped is 2cm. The sides of the bottom of the rectangular parallelepiped How long is it?
一个圆锥形麦堆，占地面积为12m**2，高是2m，把麦堆铺在地面上形成一个底面是正方形的长方体，这个长方体的高为2cm，铺成的这个长方体的底面的边长是多少？
<result>2</result>