正方体的体积为2100立方公分,边长为a公分;正方形的面积为240平方公分,边长为b公分.请利用下表判断下列叙述何者正确
N | N3 | ||
21 22 23 24 25 | 4.582576 4.690416 4.795832 4.898979 5.000000 | 14.49138 14.83240 15.16575 15.49193 15.81139 | 9261 10648 12167 13824 15625 |
N | |||
21 22 23 24 25 | 2.758924 2.802039 2.843867 2.884499 2.924018 | 5.943922 6.036811 6.126926 6.214465 6.299605 | 12.80579 13.00591 13.20006 13.38866 13.57209 |
- A.a<7
- B.b<7
- C.a>15
- D.b>15