The length of the base of a triangle is 18 cm and the height is 2.5 cm, what is its area in square centimeters
一个三角形的底边长是18厘米，高是2.5厘米，它的面积是多少平方厘米
<gadget id="calculator">2.5 / 2</gadget>
<output>1.25</output>

<gadget id="calculator">18 * 1.25</gadget>
<output>22.5</output>

<result>22.5</result>