A cylindrical glass tank, the diameter of the bottom surface measured from the inside is 20cm, and the water depth in the tank is 40cm. When a potato is submerged in water (the water does not overflow), the height of the water rises to 45cm. What is the volume of this potato in cubic centimeters?
一个圆柱形玻璃缸，从里面量底面直径是20cm，缸中水深40cm，当把一个土豆浸没在水中时(水没有溢出)，水的高度上升到45cm，这个土豆的体积是多少立方厘米？
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">45 - 40</gadget>
<output>5</output>

<gadget id="calculator">3.14 * 100 * 5</gadget>
<output>1_570</output>

<result>1_570</result>