李大伯家用篱笆围成一个梯形养鸡场,梯形的高是18米,一边利用房屋墙壁,篱笆全 用篱笆围成一个梯形养鸡场(如图所示),一边利用房屋的墙壁,篱...

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\u5206\u6790\uff1a\u7531\u9898\u610f\u53ef\u77e5\uff1a\u8fd9\u4e2a\u517b\u9e21\u573a\u7684\u5f62\u72b6\u662f\u4e00\u4e2a\u68af\u5f62\uff0c\u5176\u4e0b\u5e95\u4e3a12\u7c73\uff0c\u4e0a\u5e95\u4e3a\uff0840-23-12=5\uff09\u7c73\uff0c\u9ad8\u4e3a23\u7c73\uff0c\u4ee3\u5165\u68af\u5f62\u7684\u9762\u79ef\u516c\u5f0f\u5373\u53ef\u6c42\u89e3\uff0e
\u89e3\u7b54\uff1a
\u89e3\uff1a40-12-23=5\uff08\u7c73\uff09\uff0c\uff085+12\uff09\u00d723\u00f72\uff0c=17\u00d723\u00f72\uff0c=195.5\uff08\u5e73\u65b9\u7c73\uff09\uff1b
\u7b54\uff1a\u8fd9\u4e2a\u517b\u9e21\u573a\u7684\u5360\u5730\u9762\u79ef\u662f195.5\u5e73\u65b9\u7c73\uff0e
\u70b9\u8bc4\uff1a\u6b64\u9898\u4e3b\u8981\u8003\u67e5\u68af\u5f62\u7684\u9762\u79ef\u7684\u8ba1\u7b97\u65b9\u6cd5\u5728\u5b9e\u9645\u751f\u6d3b\u4e2d\u7684\u5e94\u7528\u3002
\u6269\u5c55\u8d44\u6599\uff1a
\u7c7b\u4f3c\u9898\u578b\uff1a
\uff081\uff09\u7528\u7bf1\u7b06\u56f4\u6210\u4e00\u4e2a\u68af\u5f62\u517b\u9e21\u573a\uff08\u5982\u56fe\u6240\u793a\uff09\uff0c\u4e00\u8fb9\u5229\u7528\u623f\u5c4b\u7684\u5899\u58c1\uff0c\u7bf1\u7b06\u7684\u603b\u957f\u5ea6\u662f65\u7c73\uff0c\u6c42\u517b\u9e21\u573a\u7684\u9762\u79ef\u3002

\u89e3\u7b54\uff1a\u6709\u5899\u7684\u90a3\u4e00\u9762\u53ef\u4ee5\u4e0d\u7528\u7b97\u3002
\u6240\u4ee5:(65-15)x15\u00f72
=50x15\u00f72
=375(\u33a1)
\u7b54:\u517b\u9e21\u573a\u7684\u9762\u79ef\u662f375\u33a1\u3002\u539f\u56e0:\u56e0\u4e3a\u6709\u4e00\u8fb9\u5df2\u7ecf\u5229\u7528\u4e86\u623f\u5c4b\u7684\u5899\u58c1\u3002\u6240\u4ee5\u90a3\u4e2a\u5899\u58c1\u5c31\u53ef\u4ee5\u4e0d\u7528\u7b97\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u53ea\u8981\u7b97\u68af\u5f62\u7684\u4e0a\u5e95\u548c\u4e0b\u5e95\u4e86\u3002\u7136\u540e\u5b83\u7684\u9ad8\u5df2\u7ecf\u77e5\u9053\u4e86\u662f15cm\u3002\u8fd9\u6837\u53ea\u8981\u7528\u53c815\u7c73\u51cf\u53bb15\u7c73\uff0c\u5c31\u7b49\u4e8e\u4e0a\u5e95\u548c\u4e0b\u5e95\u7684\u603b\u548c\u3002


(40-18)×18÷2=198

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    绛旓細鍒嗘瀽锛氱敱棰樻剰鍙煡锛氳繖涓鍏婚浮鍦虹殑褰㈢姸鏄涓涓褰锛屽叾涓嬪簳涓12绫筹紝涓婂簳涓猴紙40-23-12=5锛夌背锛岄珮涓23绫筹紝浠e叆姊舰鐨勯潰绉叕寮忓嵆鍙眰瑙o紟瑙g瓟锛氳В锛40-12-23=5锛堢背锛夛紝锛5+12锛壝23梅2锛=17脳23梅2锛=195.5锛堝钩鏂圭背锛夛紱绛旓細杩欎釜鍏婚浮鍦虹殑鍗犲湴闈㈢Н鏄195.5骞虫柟绫筹紟鐐硅瘎锛氭棰樹富瑕佽冩煡姊舰鐨勯潰绉...
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    绛旓細鏉庡ぇ浼敤绡辩瑔鍥存垚涓涓鐩磋姊舰鐨鍏婚浮鍦,涓闈㈤潬澧,鎵鐢ㄧ绗嗙殑鎬婚暱搴︿负50绫,杩欎釜鍏婚浮鍦洪潰绉灏?  鎴戞潵绛 1涓洖绛 #鐑# 缃戞枃璐ㄩ噺鏄笉鏄笅闄嶄簡?鍖垮悕鐢ㄦ埛 2014-12-21 灞曞紑鍏ㄩ儴 杩介棶 璋㈣阿 宸茶禐杩 宸茶俯杩< 浣犲杩欎釜鍥炵瓟鐨勮瘎浠锋槸? 璇勮 鏀惰捣 ...
  • 鐜澶т集鐢28m闀跨殑绡辩瑔闈犲鍥浜涓涓褰㈠吇楦鍦(濡傚浘),杩欎釜鍏婚浮鍦虹殑鍗犲湴闈...
    绛旓細杩欎釜鍏婚浮鍦虹殑鍗犲湴闈㈢Н90骞虫柟绫炽傚垎鏋愯繃绋嬪涓嬶細鐢卞浘鍙緱姊舰鐨勯珮鏄10绫筹紝鍐嶆牴鎹帇澶т集鐢28m闀跨殑绡辩瑔闈犲鍥翠簡涓涓褰㈠吇楦鍦猴紝鍙緱锛氫笂搴+涓嬪簳=28-10=18绫炽傚啀鏍规嵁姊舰鐨勯潰绉叕寮忥細姊舰闈㈢Н=锛堜笂搴+涓嬪簳锛壝楅珮梅2锛屽彲寰楋細杩欎釜鍏婚浮鍦虹殑鍗犲湴闈㈢Н=18脳10梅2=90骞虫柟绫炽
  • ...鍙︿笁杈鐢ㄧ绗嗗洿鎴愪竴涓褰㈠吇楦鍦,绡辩瑔鎬婚暱搴︿负36鍘樼背,楂8鍘樼背,杩欎釜...
    绛旓細鐢辨婚暱搴﹀拰楂樺彲浠ユ眰鍑轰笂搴曞拰涓嬪簳鐨勫拰锛屾牴鎹姊舰闈㈢Н鍏紡銆傞潰绉=锛36-8锛*8/2=112骞虫柟鍘樼背銆
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    绛旓細杩欎釜棰樺凡鐭ユ潯浠朵笉瀹屾暣锛屾棤瑙c姊舰鐨勯潰绉=锛堜笂搴+涓嬪簳锛*楂/2锛绡辩瑔鍏戦暱36绫冲彧鏄煡閬撲簡杩欎釜鐗规畩鍥涜竟褰㈢殑涓変釜杈圭殑鍜岋紝涓嶈兘绠楀嚭绗洓涓竟鐨勯暱搴︼紝鑰屼笖鍙﹀涓変釜杈圭殑闀垮害鍚勬槸澶氬皯涔熸棤娉曠‘瀹氾紝鎬庝箞鑳界畻鍑洪潰绉憿锛熷彧鑳界畻鍑轰竴杈归潬澧欎笁杈规婚暱鍥哄畾鍙互鍥村嚭鐨勬渶澶ч潰绉紙鑰屼笖鏄煩褰級鏄灏戙
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