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15问答网 > 一个长方形的面积是56平方分米，宽是8厘米，侧长是多少厘米？周长是多少厘米？

一个长方形的面积是56平方分米，宽是8厘米，侧长是多少厘米？周长是多少厘米？

2025-04-01 20:24:01

推荐回答（2个）

回答1：

长方形的面积＝长×宽，56平方分米＝5600平方厘米，所以长等于5600÷8＝700（厘米），长方形的周长＝（长+宽）×2
（700+8）×2＝708×2＝1416厘米

回答2：

56平方分米＝5600平方厘米
长：5600÷8＝700(厘米)
周长：(8＋700)×2＝1416(厘米)

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