在一边靠墙的空地里用篱笆围一块长15米,宽10米的长方形养鸡场(如图),篱笆的长最少要多少米 一个长15米,宽5米的长方形养鸡场,一条边靠墙,其余三面用篱...
\u5728\u4e00\u8fb9\u9760\u5899\u7684\u7a7a\u5730\u91cc\u7528\u7bf1\u7b06\u56f4\u4e00\u5757\u957f15\u7c73\uff0c\u5bbd10\u7c73\u7684\u957f\u65b9\u5f62\u517b\u9e21\u573a\uff08\u5982\u56fe\uff09\uff0c\u7bf1\u7b06\u7684\u957f\u6700\u5c11\u8981\u591a\u5c11\u7c7310\u00d72+15\uff0c=20+15\uff0c=35\uff08\u7c73\uff09\uff0c\u7b54\uff1a\u7bf1\u7b06\u7684\u957f\u6700\u5c11\u898135\u7c73\uff0e
\u5982\u679c\u662f\u957f\u9760\u5899\u7684\u8bdd\uff1b15+5\u00d72\uff1d25\u7c73
\u5982\u679c\u662f\u5bbd\u9760\u5899\u7684\u8bdd\uff1b15\u00d72+5\uff1d35\u7c73
=20+15,
=35(米),
答:篱笆的长最少要35米.
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