The ratio of the radii of the large circle to the small circle is (3/2), and the area of the large circle is equal to that of the small circle.
大圆与小圆的半径比是(3/2)，大圆面积是小圆的多少．
<gadget id="calculator">9 / 4</gadget>
<output>9/4 = around 2.25</output>

<result>9/4 = around 2.25</result>