张爷爷打算靠墙围一个周长是42米的长方形羊圈,如果让与墙相对的一条边是16米,那么另外三条边分别是 张爷爷靠西墙围了一个羊圈,算出这个羊圈的占地面积.如果砌上围...
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张爷爷打算靠墙围一个周长是42米的长方形羊圈,如果让与墙相对的一条边是16米,那么另外【两】条边分别是多少米?(42-16)÷2=13
答:另外【两】条边是各13米.
13米 42-16=26 26÷2=13(米)
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