面积一定情况下，求四边形周长最小值。四年级奥数问题，请高手看看。 英文问题求解，请高手帮忙看看下面的东西地道吗？
\u6c42\u56db\u8fb9\u5f62\u6700\u5c0f\u5468\u957f\u95ee\u9898
\u89e3\uff1a\u5c06\u83f1\u5f62ABCD\u653e\u7f6e\u5728\u5e73\u9762\u76f4\u89d2\u5750\u6807\u7cfb\u4e2d\uff0c\u4f7f\u5f97B\u4e3a\u539f\u70b9\uff0cBD\u5728x\u7684\u6b63\u534a\u8f74\u4e0a\uff0c
\u4f9d\u9898\u610f\uff0cA(8,6),B(0,0),E(4,3)
\u7b2c\u4e00\u6b65\uff0c\u5c06A\u5e73\u884c\u5411\u5de6\u79fb\u52a82\u4e2a\u5355\u4f4d\u5230A'\u70b9\uff0c\u5219A'(6,6),
\u7b2c\u4e8c\u6b65\uff0c\u4f5cA'\u5173\u4e8ex\u8f74\u7684\u5bf9\u79f0\u70b9F,\u5219F(6\uff0c-6),
\u7b2c\u4e09\u6b65\uff0c\u8fdeEF,\u4ea4x\u8f74\u4e8e\u70b9P,\u5728x\u8f74\u4e0a\u5411\u6b63\u65b9\u5411\u4e0a\u622a\u53d6PQ=2\uff0c
\u6b64\u65f6\uff0c\u56db\u8fb9\u5f62AEPQ\u7684\u5468\u957f\u6700\u5c0f\uff0c
\u56e0\u4e3aAE=AB/2=5\uff0cPQ=2\uff0c
AQ+EP=A'P+EP=FP+EP=EF,
\u6240\u4ee5\u56db\u8fb9\u5f62\u56db\u8fb9\u5f62AEPQ\u7684\u5468\u957f
=5+2+\u221a[(4-6)^2+(3+6)^2]
=7+\u221a85
\u54c8\u54c8\uff0c\u5c0f\u96e8\u4f60\u7684 sponge sponge \u6211\u6ca1\u6709\u542c\u8bf4\u8fc7\uff0c\u4e0d\u8fc7\u7f51\u4e0a\u67e5\u4e86\u4e00\u4e0b\uff0c\u7684\u786e\u6709\u8fd9\u79cd\u8bf4\u6cd5\u3002
\u8fd9\u91cc\u6bd4\u8f83\u5730\u9053\uff0c\u66f4\u901a\u5e38\u7528\u5230\u7684\u8bf4\u6cd5\u662f mooch of sb\uff5e
He's 30 years old, but still lives at home and mooches off his parents.
John is a miser. He always mooches off his friends.
Mooch a meal off him.
\u5c0f\u6c14 cheap / cheap-ass / stingy \u8fd9\u4e9b\u90fd\u662f\u5730\u9053\u7684\u8868\u8fbe\u65b9\u5f0f\uff0cmiser \u8fd9\u4e2a\u8bcd\u4e0d\u592a\u7528\u3002
min(C) =2 × (35 + 11) = 92 (cm)
它的周长最小为100cm.
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