题目内容
一根4米长的钢材,截下
,再截下
,还剩( )
| 1 |
| 4 |
| 1 |
| 4 |
| A.2米 | B.3米 | C.2
| D.2
|
4×[1-
-(1-
)×
]
=4×[
-
],
=4×[
-
],
=4×
,
=2
(米).
答:还剩下2
米.
故选:D.
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
=4×[
| 3 |
| 4 |
| 3 |
| 16 |
=4×[
| 3 |
| 4 |
| 3 |
| 16 |
=4×
| 9 |
| 16 |
=2
| 1 |
| 4 |
答:还剩下2
| 1 |
| 4 |
故选:D.
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