人行道长90米,宽六米,用面积是四平方分米的正方形地砖铺人行道需要多少块?

请用两种方法解决,注意单位,谢谢(*^o^*)
2024-12-16 07:29:57
推荐回答(5个)
回答1:

1块地砖面积:1米=10分米,1平方米=100平方分米,地砖每块面积=4平方分米=0.04平方米。
人行道面积:90x6=540(平方米)
需要砖:540/0.04=13500(块)
所以需要13500块地砖。

回答2:

①长=90m=900dm
宽=6m=60dm
s正=4dm²故边长=2dm
需要砖(900÷2)×(600÷2〉
=450x30O
=135000(块)
②90OX60o÷4
=900×150
=135000(块)

回答3:

90米=900分米 6米=60分米 900X60=54000÷4=13500(块) 真简单。

回答4:

90x6÷4=135
人行道长90米,宽六米,用面积是四平方分米的正方形地砖铺人行道需要135块。

回答5:

人行道长90米,宽六米,用面积是四平方分米的正方形地砖铺人行道需要1350块。

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