The base of a parallelogram is 10 cm and the height is 8 cm. A triangle and the parallelogram have the same base and height. What is the area of the triangle in square centimeters?
一个平行四边形的底是10厘米，高8厘米，一个三角形和这个平行四边形等底等高，这个三角形的面积是多少平方厘米．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">10 * 4</gadget>
<output>40</output>

<result>40</result>