The cylindrical bucket used to sprinkle the ground in the class, the radius of the bottom surface of the bucket measured from the inside is 1.5 decimeters, and the height is 4 decimeters. What is the volume of this bucket in cubic decimeters?
班里洒地用的圆柱形水桶，从里面量水桶的底面半径是1.5分米，高是4分米．这个水桶的容积是多少立方分米？
<gadget id="calculator">1.5 ** 2</gadget>
<output>2.25</output>

<gadget id="calculator">3.14 * 2.25 * 4</gadget>
<output>28.26</output>

<result>28.26</result>