The radius of the large circle is 6 cm longer than the radius of the small circle, and the radius of the large circle is 4 times the radius of the small circle. The area of the large circle is greater than the area of the small circle by how many square centimeters.
大圆的半径比小圆的半径长6厘米，且大圆半径是小圆半径的4倍．大圆的面积比小圆的面积大多少平方厘米．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">8 ** 2</gadget>
<output>64</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">64 - 4</gadget>
<output>60</output>

<gadget id="calculator">60 * 3.14</gadget>
<output>188.4</output>

<result>188.4</result>