Given that the circumference of the base of a cylinder is 15π and the height is 4, what is the volume of a cone with the same base and height as π
已知一个圆柱体的底面周长为15π，高为4，则与它等底等高的圆锥体的体积为多少π
<gadget id="calculator">7.5 ** 2</gadget>
<output>56.25</output>

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

<gadget id="calculator">56.25 * 4 * (1/3)</gadget>
<output>75</output>

<result>75</result>