亲们.....帮个忙....很简单的数学题
\u6570\u5b66\u9898 \u5f88\u7b80\u5355 \u5e2e\u4e2a\u5fd9\u5427\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff0c\u8bbe\u9e1f\u5de2\u6709\u5fd7\u613f\u8005x\u4eba\uff0c\u6c34\u7acb\u65b9\u6709\u5fd7\u613f\u8005y\u4eba
x/y=8/7
x\uff0d1/4*x \uff0d\uff08y\uff0b1/4*x\uff09=\uff0d150
\u6574\u7406\u5f97x=400\u4eba y=350\u4eba
\u7b49\u4f53\u79ef\u539f\u7406\uff0c\u4e0a\u5347\u6c34\u7684\u4f53\u79efV1=60*15*4=3600cm³
\u94c1\u5757\u7684\u4f53\u79efV2=40*15*h=V1 \u6240\u4ee5h=6cm
\u4e09\u89d2\u5f62AFE/\u4e09\u89d2\u5f62FOC=1/4\uff0c\u6240\u4ee5AF/FO=1/2\uff0c\u56e0\u4e3a0A=6\uff0c\u6240\u4ee5OF=12\uff0cF\u70b9\u5750\u6807\uff0812\uff0c0\uff09\uff0cC\u70b9\u5750\u6807\uff086\uff0c0\uff09\uff0cCE\u89e3\u6790\u5f0f\u4e3ax-6=y-12\uff0c\u5316\u4e3ax-y+6=0
这个长方体的周长是4*(2+0.4+0.8)=12.8米
答:这个柜台需要12.8米角铁
40cm=0.4m
80cm=0.8m
C=4(2+0.4+0.8)
=4×3.2
=12.8m
（长+宽+高）×4=12.8(m)
自己都说 很简单的数学题 了 还来这问？ 弱制袄？
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