cylindrical pool has a bottom radius of 3 meters and a height of 1.5 meters. How many tons of water can this pool hold? (1 cubic meter of water weighs 1 ton)
一个圆柱形水池，底面半径3米，池高1.5米，这个水池最多可盛水多少吨？(1立方米的水重1吨)
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 1.5</gadget>
<output>42.39</output>

<result>42.39</result>