cylindrical wood with a base area of 75 cm2 and a length of 90 cm. What is its volume.
一个底面积为75平方厘米，长90厘米的圆柱形木料．它的体积是多少．
<gadget id="calculator">75 * 90</gadget>
<output>6_750</output>

<result>6_750</result>