A cylinder with a base radius of 5 cm and a side view that is a square, what is its volume?
一个圆柱的底面半径是5厘米，侧面展开图是正方形，它的体积是多少？
<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

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

<gadget id="calculator">3.14 * 5 * 2</gadget>
<output>31.4</output>

<gadget id="calculator">78.5 * 31.4</gadget>
<output>2_464.9</output>

<result>2_464.9</result>