The base of the parallelogram is 40 meters and the height is 12 meters. What is the area of the triangle with the same base and height in square meters?
平行四边形的底是40米，高是12米，与它等底等高的三角形的面积是多少平方米．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">40 * 12 * (1/2)</gadget>
<output>240</output>

<result>240</result>