一块梯形菜地，上底是87米，下底比上底长12.5米，高是上底与下底和的1.2倍，平均公顷地收油菜籽 一块梯形油菜地，上底是87，下底比上底长12.5米，高是上底...
\u4e00\u5757\u68af\u5f62\u6cb9\u83dc\u5730\uff0c\u4e0a\u5e95\u662f87\u7c73\uff0c\u4e0b\u5e95\u6bd4\u4e0a\u5e95\u957f12.5\u7c73\uff0c\u9ad8\u662f\u4e0a\u5e95\u4e0e\u4e0b\u5e95\u548c\u76841.2\u500d\u3002\u5e73\u5747\u6bcf\u516c\u9877\u5730\u6536\u6cb9\u83dc\u5b50800\u5343( 87+87+12.5)\u00d7(87+87+12.5)\u00d71.2\uff0d2\u00f710000=2.086935\uff08\u516c\u9877\uff09 800\u00d72.086935\u22481669.55\uff08\u5343\u514b\uff09
\u8fd9\u5230\u9898\u5176\u5b9e\u5f88\u7b80\u5355\uff0c\u9996\u5148\u6211\u4eec\u5148\u6765\u5206\u6790\uff1a\u8fd9\u5230\u9898\u4e3b\u8981\u8003\u7684\u662f\u5927\u5bb6\u7684\u500d\u6570\u5173\u7cfb\uff0c\u68af\u5f62\u9762\u79ef\u548c\u5355\u4f4d\u8f6c\u6362\uff0c\u6240\u4ee5\u8981\u5148\u5b66\u4f1a\u8fd9\u4e9b\u77e5\u8bc6\u3002
\u800c\u500d\u6570\u5173\u7cfb\u53ea\u9700\u5f04\u61c2\u8c01\u662f\u8c01\u7684\u591a\u5c11\u6216\u8c01\u6bd4\u8c01\u591a\u591a\u5c11\uff08\u5c11\u591a\u5c11\uff09\uff0c\u800c\u8fd9\u9053\u9898\u9009\u7528\u7684\u662f\u8c01\u6bd4\u8c01\u591a\u591a\u5c11\uff0c\u4e5f\u5c31\u662f\u8bf4\u4e0b\u5e95\u6bd4\u4e0a\u5e95\u957f12.5\u7c73\uff0c\u6240\u4ee5\u8bf4\u4e0b\u5e95\u66f4\u957f\uff0c\u4e0a\u5e95\u66f4\u77ed\uff0c\u90a3\u4e48\u5df2\u77e5\u4e0a\u5e95\u662f87\u7c73\uff0c\u800c\u4e0b\u5e95\u5e94\u8be5\u5217\u5f0f\u4e3a87+12.5=99.5\uff08m\uff09\uff0c\u73b0\u5728\u8981\u77e5\u9053\u68af\u5f62\u7684\u9762\u79ef\u516c\u5f0f\uff0c\u800c\u68af\u5f62\u7684\u9762\u79ef=\uff08\u4e0a\u5e95+\u4e0b\u5e95\uff09x\u9ad8\u9664\u4ee52\uff0c\u77e5\u9053\u4e86\u9762\u79ef\u516c\u5f0f\uff0c\u90a3\u4e48\u5927\u5bb6\u5c31\u77e5\u9053\u8fd8\u8981\u7b97\u51fa\u9ad8\uff0c\u800c\u539f\u9898\u8bf4\u9ad8\u662f\u4e0a\u5e95\u4e0e\u4e0b\u5e95\u548c\u76841.2\u500d\uff0c\u4f46\u662f\u4e0a\u4e0b\u5e95\u7684\u548c\u662f99.5m\uff0c\u6240\u4ee5\u752899.5+97=186.5\uff08m\uff09186.5\u00d71.2=223.8\uff08m\uff09\u3002\u73b0\u5728\u6211\u4eec\u7b97\u51fa\u4e86\u68af\u5f62\u4e0a\u4e0b\u5e95\u7684\u548c\uff0c\u8fd8\u8981\u7b97\u51fa\u68af\u5f62\u7684\u9762\u79ef\uff0c\u4ece\u4e0a\u9762\u7684\u5217\u5f0f\u4ee5\u53ca\u68af\u5f62\u7684\u516c\u5f0f\u53ef\u4ee5\u77e5\u9053\uff0c\u73b0\u5728\u8fd8\u9700\u7b97\u51fa\u68af\u5f62\u7684\u9762\u79ef\uff0c\u5217\u5f0f\u4e3a223.8x186.5\u00f72=20869.35\uff08\u33a1\uff09\uff0c\u73b0\u5728\u7b97\u51fa\u4e86\u68af\u5f62\u7684\u9762\u79ef\uff0c\u4e5f\u5c31\u662f\u8bf4\u89e3\u51b3\u4e86\u500d\u6570\u95ee\u9898\u548c\u68af\u5f62\u9762\u79ef\u95ee\u9898\uff0c\u6240\u4ee5\u8fd8\u5269\u4e0b\u4e00\u4e2a\u95ee\u9898\uff0c\u90a3\u5c31\u662f\u5355\u4f4d\u8f6c\u6362\u95ee\u9898\uff0c\u8fd9\u9053\u9898\u7684\u4e0d\u540c\u5355\u4f4d\u662f\u201c\u7c73\u201d\u548c\u201c\u516c\u503e\u201d\uff0c\u90a3\u4e48\u5b83\u4eec\u4e4b\u95f4\u7684\u8fdb\u7387\u662f10000\uff0c\u6240\u4ee520869.35\u33a1=2.086935h\u33a1\uff0c\u4e5f\u5c31\u662f\u8bf4\u752820869.35\u00f710000\uff0c\u800c\u9898\u76ee\u4e2d\u7684\u5e73\u5747\u6bcf\u516c\u9877\u5730\u6536\u6cb9\u83dc\u7c7d800\u5343\u514b\uff0c\u5c31\u75282.086935\u00d7800=1669.548\uff08\u338f\uff09\u800c\u6700\u7ec8\u7b54\u6848\u5c31\u7b49\u4e8e1669.548\u338f\uff01
\u6574\u4f53\u89e3\u91ca\u4e3a\uff1a
87+12.5=99.5\uff08m\uff0999.5+97=186.5\uff08m\uff09
186.5\u00d71.2=223.8\uff08m\uff09
223.8x186.5\u00f72=20869.35\uff08\u33a1\uff09=2.086935\uff08h\u33a1\uff09
2.086935\u00d7800=1669.548\uff08\u338f\uff09
\u7b54\uff1a\u8fd9\u5757\u5730\u5171\u6536\u6cb9\u83dc\u82b1\u7c7d1669.548\u5343\u514b\u3002
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绛旓細涓鍧楁褰㈣彍鍦,涓婂簳鏄87绫,涓搴曟瘮涓婂簳闀12.5绫,楂樻槸涓婂簳涓庝笅搴曞拰鐨1.2鍊,骞冲潎鍏》鍦版敹娌硅彍绫800鍗冨厠,杩欏潡鍦板叡鏀舵补鑿滅苯澶氬皯鍗冨厠?(淇濈暀涓や綅灏忔暟)... 涓鍧楁褰㈣彍鍦,涓婂簳鏄87绫,涓嬪簳姣斾笂搴曢暱12.5绫,楂樻槸涓婂簳涓庝笅搴曞拰鐨1.2鍊,骞冲潎鍏》鍦版敹娌硅彍绫800鍗冨厠,杩欏潡鍦板叡鏀舵补鑿滅苯澶氬皯鍗冨厠?(淇濈暀涓や綅灏忔暟) 灞曞紑 ...
绛旓細涔熷氨鏄涓嬪簳姣涓婂簳闀12.5绫筹紝鎵浠ヨ涓嬪簳鏇撮暱锛屼笂搴曟洿鐭紝閭ｄ箞宸茬煡涓婂簳鏄87绫锛岃屼笅搴曞簲璇ュ垪寮忎负87+12.5=99.5锛坢锛夛紝鐜板湪瑕佺煡閬撴褰㈢殑闈㈢Н鍏紡锛岃屾褰㈢殑闈㈢Н=锛堜笂搴+涓嬪簳锛墄楂橀櫎浠2锛岀煡閬撲簡闈㈢Н鍏紡锛
绛旓細涓鍧楁褰娌鑿滃湴,涓婂簳鏄90m,涓搴曟槸160m,楂樻槸160m,杩欏潡鍦版湁澶氬皯鍏》锛燂紙90+160锛壝160梅2 =250脳160梅2 =20000锛堝钩鏂圭背锛=2锛堝叕椤凤級绛旓細杩欏潡鍦版湁2鍏》銆
绛旓細姊舰涓婂簳a=80绫筹紝涓搴昩=180绫 楂榟=140绫 鏍规嵁姊舰闈㈢Н鍏紡鍙眰鍑鑿滃湴闈㈢НS S=锛坅+b锛塰/2 锛(80+180)脳140梅2 锛18200骞虫柟绫 锛1.82鍏》 娉細1鍏》锛10000骞虫柟绫
绛旓細瑙ｏ細宸茬煡鏋滃洯閲屾湁涓鍧楁褰㈣彍鍦帮紝涓婂簳鏄160绫筹紝涓嬪簳鏄300绫筹紝楂樻槸40绫筹紝寰楄繖鍧楁褰㈣彍鍦扮殑闈㈢Н=锛堜笂搴+涓嬪簳锛壝楅珮梅2 =锛160+300锛壝40梅2 =460脳20 =9200骞虫柟绫 绛旓細杩欏潡姊舰鑿滃湴鐨勯潰绉槸9200骞虫柟绫炽
绛旓細楂 鈮 15绫 鎵浠ワ紝杩欎釜姊舰鐨勯珮绾︿负15绫炽備妇渚嬶細鍋囪鏈涓涓褰㈣彍鍦帮紝涓婂簳闀夸负21绫筹紝涓搴曢暱涓45绫筹紝闈㈢Н涓495骞虫柟绫炽傛垜浠彲浠ヤ娇鐢ㄤ笂杩板叕寮忚绠楀嚭杩欎釜姊舰鐨勯珮銆傚皢宸茬煡鐨勫间唬鍏ュ叕寮忥紝璁＄畻杩囩▼濡備笅锛495 = (21 + 45) * 楂 / 2 495 = 66 * 楂 / 2 990 = 66 * 楂 楂 = 990 / 66 ...
绛旓細濡傛灉涓鍧楁褰㈣彍鍦鐨涓婂簳鏄16.5绫筹紝涓搴曟瘮涓婂簳澶8绫筹紝閭ｄ箞涓嬪簳鐨勯暱搴︿负16.5 + 8 = 24.5绫炽傛褰㈢殑闈㈢Н鏄袱涓簳杈归暱鐨勪箻绉櫎浠2锛屽啀涔樹笂楂樸傚洜姝わ紝鎴戜滑鍙互鍋囪姊舰鐨勯珮鏄痻锛岄偅涔堟褰㈢殑闈㈢Н涓猴細(16.5 + 24.5) * x / 2 = 20.5 * x / 2 鍥犳锛屾垜浠彲浠ュ垪鍑烘柟绋嬶細20.5 * x / 2...
绛旓細2. 涓鍧楁褰㈣彍鍦,涓婂簳鏄24绫,涓搴曟槸36绫,楂18绫,姹傝繖鍧楄彍鍦扮殑闈㈢Н銆3. 涓寮犵孩绾搁暱18鍒嗙背,瀹12鍒嗙背,濡傛灉瑁佹垚搴曞拰楂樺潎涓2鍒嗙背鐨勪笁瑙掑舰灏忔棗,鍙互瑁佸灏戦潰?4. 灏忚姵鍜屽皬鍏板鍚屽湪瀛︽牎鐨勬涓滈潰,浠庡鍒板鏍,灏忚姵瑕佽蛋1.15鍗冪背,灏忓叞瑕佽蛋0.96鍗冪背,灏忚姵鍜屽皬鍏板鐩歌窛澶氬皯鍗冪背?5. 涓鏋濋挗绗38.5鍏,涓涓功鍖呮瘮閽㈢瑪璐...
绛旓細涓婂簳鏄12绫筹紝涓斿鏋滃皢瀹冪殑涓婂簳澧炲姞6绫筹紝杩欏潡鑿滃湴灏辫竟闀涓涓姝ｆ柟褰紝寰椾笅搴=涓婂簳+6=12+6=18绫筹紝楂=涓嬪簳=18绫筹紝寰楀師鏉ヨ繖鍧楁褰㈣彍鍦鐨勯潰绉=锛堜笂搴+涓嬪簳锛壝楅珮梅2 =锛12+18锛壝18梅2 =30脳18梅2 =540梅2 =270骞虫柟绫 绛旓細鍘熸潵杩欏潡鑿滃湴鐨勯潰绉槸270骞虫柟绫炽
绛旓細钀濆崪鍦扮殑闈㈢Н锛濓紙30锛18锛壝10梅2锛60骞虫柟绫炽傝嚦浜庣敾鍥撅細浣犲彲浠ヤ粠姊舰鐨勫彸涓婃柟鐨勯偅涓偣鍚戝乏涓嬫柟浣滃乏杈圭殑骞宠绾垮氨鍙互浜嗐
