A conical glass, the diameter of the bottom surface measured from the inside is 6cm, the height is 10cm, how many milliliters of water can this glass hold at most.
一个圆锥形的玻璃杯，从里面量出底面直径是6cm，高是10cm，这个玻璃杯最多可以盛水多少毫升．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 10</gadget>
<output>94.2</output>

<result>94.2</result>