The ratio of the radius length of the big circle to the small circle is 4:3, what percentage is the area of the small circle less than the area of the big circle?
大圆和小圆的半径长度之比是4：3，小圆面积比大圆面积少百分之几？
<gadget id="calculator">7 / 16</gadget>
<output>7/16 = around 0.4375</output>

<result>7/16 = around 0.4375</result>