一个长方形花圃长18米,宽12米,沿四周每隔4米插一面红旗,每两面红旗的中间插一面黄旗。
\u4e00\u4e2a\u957f\u65b9\u5f62\u82b1\u5703\u957f18\u7c73\uff0c\u5bbd12\u7c73\uff0c\u6cbf\u56db\u5468\u6bcf\u96944\u7c73\u63d2\u4e00\u9762\u7ea2\u65d7\uff0c\u6bcf\u4e24\u9762\u7ea2\u65d7\u7684\u4e2d\u95f4\u63d2\u4e00\u9762\u9ec4\u65d7\u3002\u82b1\u5703\u5468\u56f4\u5404\u63d2\u4e86\u591a\u76f8\u5f53\u4e8e\u6bcf\u96942\u7c73\u4e00\u9762\u65d7\u5b50\uff0c\u957f\u65b9\u5f62\u5468\u957f\u4e3a 2\u00d7\uff0818+12\uff09=60
60\u00f72=30
\u517130\u9762\u65d7\u5b50
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(18+12)*2/4+1=16面红旗16/2+1=9面黄旗
周长60 60/4=红旗 红旗+1=黄旗
周长60,红旗个数60/4,黄旗60/4 -1=14
绛旓細鐩稿綋浜庢瘡闅2绫充竴闈㈡棗瀛愶紝闀挎柟褰鍛ㄩ暱涓 2脳锛18+12锛=60 60梅2=30 鍏30闈㈡棗瀛
绛旓細锛18+12锛*2/4+1=16闈㈢孩鏃 16/2+1=9闈㈤粍鏃
绛旓細锛18+a)脳12=216+12a骞虫柟绫
绛旓細18脳2+12 =36+12 =48 绛:涓闈㈤潬澧欙紝鍏朵粬涓夐潰鍥寸绡辩瑔锛岀绡辩瑔鏈澶氭湁48绫
绛旓細瑙o細18+12+12=42锛堢背锛夌瓟锛氱绗嗚嚦灏戣42绫炽
绛旓細12b
绛旓細18脳12-2脳锛18+12锛夛紜2脳2=40m²鏈涢噰绾筹紝璋㈣阿锛
绛旓細绗竴棰橈細涓涓暱鏂瑰舰鑺卞渻锛岄暱鏄18绫筹紝瀹鏄12绫筹紝濡傛灉鎶婂鍑忓皯3绫筹紝瑕佷娇闈㈢Н涓嶅彉锛岄暱搴斿鍔犲灏戠背锛18*3/12=4.5(绫)锛堣鍥句竴锛夌浜岄锛氭湁涓涓暱鏂瑰舰鐨勫競姘戝箍鍦猴紝闀100绫筹紝瀹80绫筹紝骞垮満涓棿鏈変袱鏉″4绫崇殑浜鸿閬擄紝鎶婂箍鍦哄钩鍧囧垎鎴愪簡鍥涘潡锛堝氨鏄湪涓棿鏈変竴鏉″崄瀛楄矾锛屽儚鍗佸瓧鏋朵竴鏍风殑锛夛紝姣忎竴...
绛旓細鍥炵瓟锛18*12梅9-18=6
绛旓細12x2+18=42 12x18=216 绡辩瑔鏈42绫筹紝鑺卞渻鐨勫崰鍦伴潰绉槸216骞虫柟绫炽