In a trapezoid, the upper base is 10 cm, the lower base is (3/2) of the upper base, and the height is (1/2) shorter than the upper base. What is the area of the trapezoid in square centimeters?
一个梯形，上底是10厘米，下底是上底的(3/2)，高比上底短(1/2)，这个梯形的面积是多少平方厘米？
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">10 * (3/2)</gadget>
<output>15</output>

<gadget id="calculator">10 + 15</gadget>
<output>25</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">10 * (1/2)</gadget>
<output>5</output>

<gadget id="calculator">25 * 5 * (1/2)</gadget>
<output>125/2 = around 62.5</output>

<result>125/2 = around 62.5</result>