The base of the triangle is 3.15 cm, the height is 6.3 cm, what is the area in square centimeters?
三角形的底是3.15厘米，高是6.3厘米，面积是多少平方厘米．
<gadget id="calculator">6.3 / 2</gadget>
<output>3.15</output>

<gadget id="calculator">3.15 * 3.15</gadget>
<output>9.9225</output>

<result>9.9225</result>