The perimeter ratio of the large circle to the small circle is 3:2. If the area of the large circle is 18cm**2, what is the area of the small circle in square centimeters?
大圆和小圆的周长比是3：2，若大圆的面积是18cm**2，则小圆的面积是多少平方厘米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) ** 2</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">18 * (4/9)</gadget>
<output>8</output>

<result>8</result>