There are two parallelograms and triangles with equal bases and equal heights. The base of the triangle is 4 cm and the area is 10 cm2. What is the height of the parallelogram in cm?
有两个等底等高的平行四边形和三角形．三角形的底是4厘米，面积是10平方厘米．平行四边形的高是多少厘米？
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">10 * (1/2)</gadget>
<output>5</output>

<result>5</result>