The side length of a square is equal to the radius of a circle, the area of the square is 15m**2, what is the area of the circle dm**2?
一个正方形的边长和一个圆的半径相等，正方形的面积是15m**2，圆的面积是多少dm**2？
<gadget id="calculator">3.14 * 15 * 100</gadget>
<output>4_710</output>

<result>4_710</result>