Cut out the largest circle from a rectangular piece of paper with a length of 6 cm and a width of 4 cm. What is the area of the paper to be cut in square centimeters?
用一张长6厘米、宽4厘米的长方形纸片剪一个最大的圆，需要剪掉的纸片面积是多少平方厘米．
<result>11.44</result>