The perimeter of a right-angled trapezoid is 72cm, the ratio of the sum of the two waists to the sum of the two bases is 1:2, and one waist is the other (3/5), what is the area of the right-angled trapezoid?
一个直角梯形的周长是72cm，两腰之和与两底之和的比是1：2，其中一腰是另一腰的(3/5)，这个直角梯形的面积是多少．
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">72 * (1/3)</gadget>
<output>24</output>

<gadget id="calculator">72 - 24</gadget>
<output>48</output>

<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">24 * (3/8)</gadget>
<output>9</output>

<gadget id="calculator">9 / 2</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">48 * (9/2)</gadget>
<output>216</output>

<result>216</result>