The lateral area of a cylinder is 942cm**2, the volume is 2355cm**3, what is its bottom area in cm**2.
一个圆柱体的侧面积是942cm**2，体积是2355cm**3，它的底面积是多少cm**2．
<gadget id="calculator">942 / 2</gadget>
<output>471</output>

<gadget id="calculator">2_355 / 471</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25</gadget>
<output>78.5</output>

<result>78.5</result>