If one angle of an isosceles triangle is a right angle and its area is 50 square centimeters, what is the sum of its two sides?
一个等腰三角形有一个角是直角，它的面积是50平方厘米，则它的两条直角边的和是多少厘米．
<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<result>20</result>