The two sides of a right triangle are 3.5 cm and 2.7 cm respectively. What is the area of the triangle?
一个直角三角形的两条直角边分别是3.5厘米和2.7厘米，这个三角形的面积是多少．
<gadget id="calculator">2.7 / 2</gadget>
<output>1.35</output>

<gadget id="calculator">3.5 * 1.35</gadget>
<output>4.725</output>

<result>4.725</result>