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数学
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如图,甲、乙、丙三根木棒插在水池中,它们的长度之和是360厘米.甲木棒有
3
4
露在水面上,乙木棒有
4
7
露在水面上外,丙木棒有
2
5
露在水面上.请问:水深是多少厘米?
人气:305 ℃ 时间:2020-04-05 13:39:05
解答
A棒有1÷(1-
3
4
)=4(份);
B棒有1÷(1-
4
7
)=2
1
3
(份);
C棒有1÷(1-
2
5
)=1
2
3
(份);
池深:360÷(4+2
1
3
+1
2
3
)
=360÷8
=45(厘米)
答:水深45厘米.
故答案为:45.
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