A cuboid has a base area of 30 square decimeters and a height of 3 meters. What is its volume?
一个长方体，底面积是30平方分米，高3米，它的体积是多少立方分米？
<gadget id="calculator">3 * 10 * 3 * 10</gadget>
<output>900</output>

<result>900</result>