学校里有一个长方形花坛,花坛的周长为24米,长和宽之比为七比五。那么这个花坛的面积为多少平方米? 学校准备建造一个长方形花坛,要求周长为24米,其中的长与宽的...
\u5b66\u6821\u51c6\u5907\u5efa\u9020\u4e00\u4e2a\u957f\u65b9\u5f62\u82b1\u575b\uff0c\u8981\u6c42\u5468\u957f\u4e3a24\u7c73\uff0c\u5176\u4e2d\u7684\u957f\u4e0e\u5bbd\u7684\u6bd4\u4e3a1\uff1a2\uff0e\u5728\u5b83\u7684\u6b63\u4e2d\u592e\u5efa\u4e00\u4e2a\u534a\u5f84\u4e3a1\u7c73\u768424\u00f72=12\uff08\u7c73\uff09\uff0c12\u00d711+2=4\uff08\u7c73\uff09\uff0c12-4=8\uff08\u7c73\uff09\uff0c\u9634\u5f71\u90e8\u5206\u7684\u9762\u79ef\u4e3a\uff1a8\u00d74-3.14\u00d712\uff0c=32-3.14\uff0c=28.86\uff08\u5e73\u65b9\u7c73\uff09\uff1b\u7b54\uff1a\u9634\u5f71\u90e8\u5206\u7684\u9762\u79ef\u662f28.86\u5e73\u65b9\u7c73\uff0e
24\u00f72=12\uff08\u7c73\uff09\uff0c12\u00d7 1 1+2 =4\uff08\u7c73\uff09\uff0c12-4=8\uff08\u7c73\uff09\uff0c\u9634\u5f71\u90e8\u5206\u7684\u9762\u79ef\u4e3a\uff1a8\u00d74-3.14\u00d71 2 \uff0c=32-3.14\uff0c=28.86\uff08\u5e73\u65b9\u7c73\uff09\uff1b\u7b54\uff1a\u9634\u5f71\u90e8\u5206\u7684\u9762\u79ef\u662f28.86\u5e73\u65b9\u7c73\uff0e
花坛长和宽的和是:24÷2=12(米)
花坛长:
12÷(7+5)×7=7(米)
花坛宽:
12-7=5(米)
花坛面积是:
7×5=35(平方米)
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