The area of a parallelogram is 30 square centimeters, the base is 7.5 centimeters, and the height is centimeters.
一个平行四边形的面积是30平方厘米，底是7.5厘米，高是多少厘米．
<gadget id="calculator">30 / 7.5</gadget>
<output>4</output>

<result>4</result>