There is a triangular plywood with a base length of 1.8 meters and a height of 0.75 meters above the base. Paint one side of it, how many square meters is the painted area?
有一块三角形的三合板，底边长1.8米，底边上的高0.75米．在它的一面刷上油漆，刷油漆的面积是多少平方米？
<gadget id="calculator">0.75 / 2</gadget>
<output>0.375</output>

<gadget id="calculator">1.8 * 0.375</gadget>
<output>0.675</output>

<result>0.675</result>