piece of parallelogram glass has a base of 50 cm and a height of 70 cm, what is its area in square centimeters?
一块平行四边形玻璃，底是50厘米，高是70厘米，它的面积是多少平方厘米．
<gadget id="calculator">50 * 70</gadget>
<output>3_500</output>

<result>3_500</result>