After the radius of a circle is enlarged several times, the area is 8 times larger than the original, and the circumference is 50.24 cm larger than the original. What is the original area of the circle in square centimeters?
一个圆半径扩大若干倍后，面积比原来多8倍，周长比原来多50.24厘米，这个圆原来的面积是多少平方厘米．
<gadget id="calculator">3.14 * 4 * 4</gadget>
<output>50.24</output>

<result>50.24</result>