A cuboid with a height of 5 cm has a lateral area of 20 cm2, what is the perimeter of the base of the cuboid in cm?
一个高5厘米的长方体，它的侧面面积是20平方厘米，这个长方体底面周长是多少厘米．
<gadget id="calculator">20 / 5</gadget>
<output>4</output>

<result>4</result>