题目内容
12米增加
后,又减少
,仍是12米.______.(判断对错)
| 1 |
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12×(1+
)×(1-
)
=12×
×
,
=11
(米);
答:此时长11
米.
故答案为:×.
| 1 |
| 6 |
| 1 |
| 6 |
=12×
| 7 |
| 6 |
| 5 |
| 6 |
=11
| 2 |
| 3 |
答:此时长11
| 2 |
| 3 |
故答案为:×.
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