10 potted flowers are placed on the edge of a circular flower bed, and the distance between each two potted flowers is 1 meter. How many meters is the circle of the flower bed?
在圆形的花坛边上放了10盆花，每两盆花之间相隔1米，花坛一圈长多少米．
<gadget id="calculator">10 * 1</gadget>
<output>10</output>

<result>10</result>