There is a rectangle with a length of 15 cm and a width of 8 cm. Another right-angled trapezoid has an upper base with a length of 7 cm, a lower base with a length of 6 cm, and a height of 8 cm. Put them together to form a trapezoid. What is the area of the trapezoid in square centimeters?
有一个长方形长15厘米，宽8厘米，另一直角梯形上底长7厘米，下底长6厘米，高8厘米，将它们拼成一个梯形，梯形的面积是多少平方厘米．
<gadget id="calculator">15 + 7 + 15 + 6</gadget>
<output>43</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">43 * 4</gadget>
<output>172</output>

<result>172</result>