Dad put a rockery rock in a cuboid fish tank with a bottom area of 51cm**2, and the water level rose by 3cm. What is the volume of this rockery?
爸爸在一个底面积为51cm**2的长方体鱼缸里放入了一个假山石，水面上升了3cm．这个假山石的体积是多少？
<gadget id="calculator">51 * 3</gadget>
<output>153</output>

<result>153</result>