The perimeter of an isosceles triangle is 32cm, the waist length is 6cm, the height is 5cm, what is the area in cm**2.
一个等腰三角形的周长是32cm，腰长是6cm，高是5cm，面积是多少cm**2．
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">32 - 12</gadget>
<output>20</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">20 * (5/2)</gadget>
<output>50</output>

<result>50</result>