The lateral area of a cylinder is 942 square decimeters, and the height is 6 decimeters. What is the area of its base?
一个圆柱的侧面积是942平方分米，高是6分米，它的底面积是多少．
<gadget id="calculator">942 / 6 / 3.14 / 2</gadget>
<output>25</output>

<gadget id="calculator">25 ** 2</gadget>
<output>625</output>

<gadget id="calculator">3.14 * 625</gadget>
<output>1_962.5</output>

<result>1_962.5</result>