If the base of a triangle is 7 cm and the height is 6 cm, what is the area of a parallelogram equal to its base and height in square centimeters?
一个三角形的底是7厘米，高是6厘米，与它等底等高的平行四边形的面积是多少平方厘米．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">7 * 3 * 2</gadget>
<output>42</output>

<result>42</result>