一个长方形的宽是4厘米周长是宽的6倍长是多少厘米列,式计算 一个长方形的宽是4厘米，周长是宽的6倍，长是几厘米？
\u4e00\u4e2a\u957f\u65b9\u5f62\u7684\u5bbd4\u5398\u7c73\uff0c\u5468\u957f\u662f\u5bbd\u76846\u500d\uff0c\u957f\u662f\u591a\u5c11\u5398\u7c73\u65e0\u8bba\u600e\u4e48\u526a\uff0c\u5269\u4e0b\u90e8\u5206\u7684\u9762\u79ef\u90fd\u4e0d\u4f1a\u53d8\u4e14\uff1d100\uff0d24\uff1d76\u5e73\u65b9\u5398\u7c73
\u4f46\u5468\u957f\u4f1a\u56e0\u526a\u7684\u90e8\u4f4d\u4e0d\u540c\u800c\u53d1\u751f\u53d8\u5316\uff1a
1\u3001\u5728\u89d2\u4e0a\u526a\uff0c\u5468\u957f\u4e0d\u53d8\uff0c\u4ecd\u4e3a40\u5398\u7c73
2\u3001\u5728\u8fb9\u4e0a\u526a\uff0c\u6709\u4e24\u79cd\u6cd5\uff0c\u4e00\u4e3a\u6240\u526a\u8fb9\u5e73\u884c\u4e8e\u5c0f\u957f\u65b9\u5f62\u7684\u957f\u8fb9\uff0c\u5468\u957f\uff1d30\uff0b2\uff0a4\uff0b6\uff0b4\uff1d48\u5398\u7c73\uff0c\u4e8c\u662f\u5e73\u884c\u4e8e\u5bbd\uff0c\u5468\u957f\uff1d30\uff0b2\uff0a6\uff0b4\uff0b6\uff1d52\u5398\u7c73
3\u3001\u5728\u4e2d\u5fc3\u526a\uff0c\u5916\u5468\u957f\u4e0d\u53d8\uff0c\u4ecd\u4e3a40\u5398\u7c73\uff0c\u4f46\u589e\u52a0\u4e86\u5185\u5468\u957f\uff0c\u53732\uff084\uff0b6\uff09\uff1d20\u5398\u7c73
\u957f\u662f8\u5398\u7c73
4Ⅹ6=24(厘米)，(24十4)ⅹ2=56(厘米)6×4÷2-4=8
4*6/2-4=8
（4×6）/2-4=8
绛旓細闀挎柟褰㈠懆闀=(闀+瀹)脳2鍗筹細(4+5+4)脳2 =13脳2 =26(鍘樼背)=2.6鍒嗙背 璁＄畻缁撴灉锛氳繖闀挎柟褰㈢殑鍛ㄩ暱鏄26鍘樼背锛屽鏋滅敤鍒嗙背涓哄崟浣嶉偅灏辨槸2.6鍒嗙背銆傛垜鐨勫洖绛斿鍚楋紝甯屾湜浣犲枩娆
绛旓細杩欎釜棰樺彲浠ヨ闀夸负a锛cm锛夛紝瀹戒负b锛坈m锛夛紝闈㈢Н涓簊锛坈m锛夛紝鍛ㄩ暱涓c锛坈m锛夛紱鍙互鍒楀嚭鏂圭▼缁勶細c=2x锛坅+b锛=60b-a=4s=axb瑙ｄ箣寰梥=17x13=221绛旓細璇闀挎柟褰㈢殑闈㈢Н涓221cm銆
绛旓細瑙ｏ細宸茬煡涓涓暱鏂瑰舰鐨勫懆闀=20鍘樼背锛屽=4鍘樼背锛屼笖闀挎柟褰㈢殑鍛ㄩ暱=2脳锛堥暱+瀹斤級锛屽緱2脳锛堥暱+4锛=20 闀+4=20梅2 闀+4=10 闀=10-4 闀=6鍘樼背 绛旓細杩欎釜闀挎柟褰㈢殑闀挎槸6鍘樼背銆
绛旓細闀挎柟褰㈠懆闀夸负锛堥暱+瀹斤級脳2锛屽垯锛6+4锛壝2=20. 鎵撳瓧瀹炲睘涓嶆槗锛屾湜閲囩撼 璇烽噰绾炽
绛旓細瑙ｏ細闀挎柟褰㈠懆闀 =2x锛堥暱+瀹斤級瀛楁瘝C琛ㄧず鍛ㄩ暱锛宎琛ㄧず闀匡紝b琛ㄧず瀹 C=2x锛坅+b锛塁=2a+2b 杩欎釜闀挎柟褰㈠懆闀 =2x9+2x4 =18+8 =26鍘樼背
绛旓細杩欎釜棰樼洰寰堢畝鍗曞憪锛屽洜涓闀挎柟褰㈢殑鍛ㄩ暱灏辨槸闀匡紝鍔犲鐨勪袱鍊嶃傛棦鐒跺畠鐨鍛ㄩ暱鏄20cm锛岄偅涔20cm梅2灏=10cm 10cm-4灏辩瓑浜6cm銆傝繖涓暱鏂瑰舰鐨勯暱搴﹀氨鏄6cm銆
绛旓細闀挎柟褰㈢殑闀垮鍜屼负锛24梅2=12锛堝帢绫筹級锛岀鍚堟潯浠剁殑闀夸负8鍘樼背锛瀹戒负4鍘樼背锛屾鏂瑰舰鐨勮竟闀夸负4鍘樼背锛屽垯鍛ㄩ暱涓4脳4=16锛堝帢绫筹級锛涚瓟锛氭瘡涓鏂瑰舰鐨鍛ㄩ暱鏄16鍘樼背锛庢晠閫夛細C锛
绛旓細瑙ｏ細宸茬煡涓涓暱鏂瑰舰鐨勫懆闀=18鍘樼背锛屽=4鍘樼背锛屼笖闀挎柟褰㈢殑鍛ㄩ暱=2脳锛堥暱+瀹斤級寰2脳锛堥暱+4锛=18 闀+4=18梅2 闀+4=9 闀=9-4 闀=5鍘樼背 绛旓細闀挎柟褰㈢殑闀挎槸5鍘樼背銆
绛旓細4脳2锛8锛鍘樼背锛鍛ㄩ暱锛氾紙4+8锛壝2锛24锛堝帢绫筹級闈㈢Н锛4脳8锛32锛堝钩鏂瑰帢绫筹級浣犲ソ锛屾湰棰樺凡瑙ｇ瓟,濡傛灉婊℃剰 璇风偣鍙充笅瑙掆滈噰绾崇瓟妗堚濄
绛旓細闀匡細4X3=12锛鍘樼背锛鍛ㄩ暱锛氾紙12+4锛塜2=32锛堝帢绫筹級
