从一个长为13米,华为九米的长方,邢台一终点下一个最大的正方形剩下的部分的面? 理工学科 -> 数学 -> 初3 ->
\u7406\u5de5\u7684\u5b66\u751f\u7684\u4e13\u4e1a\u53ef\u4ee5\u53bb\u534e\u4e3a\u5417\u534e\u4e3a\u897f\u7814\u6240\u7406\u5de5\u5927\u6bd5\u4e1a\u7684\u4eba\u8fd8\u662f\u5f88\u591a\u7684\uff0c\u5c31\u7b97\u662f\u7406\u5de5\u5927\u7684\u672c\u79d1\u751f\u4e5f\u6709\u53bb\u534e\u4e3a\u7684\u554a\uff08\u4e0d\u540c\u7684\u662f\u897f\u7535\u4ea4\u5927\u662f\u6bd4\u8f83\u4e00\u822c\u7684\u4eba\u53bb\u534e\u4e3a\uff0c\u7406\u5de5\u5927\u662f\u6bd4\u8f83\u597d\u7684\u4eba\u53bb\u534e\u4e3a\uff09\u3002
\u8bf4\u591a\u4e86\u53ef\u80fd\u6709\u5439\u725b\u7684\u5acc\u7591\uff0c\u8fd8\u662f\u95ee\u95ee\u4f60\u7684\u5e08\u5144\u5427\uff0c\u6253\u542c\u4e00\u4e0b\u5c31\u77e5\u9053\u4e86\uff0c\u7406\u5de5\u5927\u7814\u7a76\u751f\u53bb\u534e\u4e3a\u8fd8\u662f\u4e0d\u592a\u96be\u7684
1 \u6761\u4ef6\u4e0d\u5168\uff0c\u4f46\u662f\u53ea\u80fd\u9009A
\u56e0\u4e3a\u8ddd\u79bb\u4e0d\u53ef\u80fd\u5927\u4e8e\u534a\u5f84
3 D
A\u4e0d\u5bf9\uff0c\u4e24\u6761\u76f4\u5f84\u4e92\u76f8\u5e73\u5206
B\u660e\u663e\u4e0d\u5bf9\uff0c\u5e73\u5206\u4e00\u6761\u5f27\u7684\u76f4\u7ebf\u53ef\u4ee5\u6709\u65e0\u6570\u6761
C\u4e0d\u5bf9\uff0c\u534a\u5f84\u4e0d\u540c\u7684\u65f6\u5019\u4e0d\u540c
4C
5 \uff08a-b\uff09/2\u6216\u8005\uff08a+b\uff09/2\uff08\u70b9\u5728\u56ed\u5185\u7684\u60c5\u51b5\uff09
7D \u5916\u5fc3\u4e3a\u5916\u63a5\u5706\u7684\u5706\u5fc3
10 D\u76f4\u5f84\u6240\u5bf9\u7684\u5706\u5468\u89d2\u4e3a\u76f4\u89d2
13×9-9×9
=117-81
=36(平方米)
答:剩下部分的面积是36平方米。
绛旓細鍘熷懆闀=10+10+6+6=32m 鍓╀笅=32m
绛旓細鎮ㄥソ锛屽瘨妯辨殩鏆栦负浣犺В绛旓細锛13-5锛壝13 =8脳13 =104骞虫柟绫 闈㈢Н浼氬鍔104骞虫柟绫 濡傛灉浣犺鍙垜鐨勫洖绛旓紝璇峰強鏃剁偣鍑汇愰噰绾充负婊℃剰鍥炵瓟銆戞寜閽紝锛堟垨鍦ㄥ鎴风鍙充笂瑙掕瘎浠风偣銆愭弧鎰忋戯級浣犵殑閲囩撼锛屾槸鎴戝墠杩涚殑鍔ㄥ姏! 浣犵殑閲囩撼涔熶細缁欎綘甯﹀幓璐㈠瘜鍊肩殑銆傚鏈変笉鏄庣櫧锛屽彲浠ヨ拷闂紝鐩村埌瀹屾垚寮勬噦姝ら!
绛旓細瑙o細渚濋鎰忥紝鍦涓寮犻暱鏂瑰舰鍗$焊锛岄暱10绫筹紝瀹6绫筹紝浠庝笂闈㈠壀涓嬩釜鏈澶х殑姝f柟褰紝浠庨暱鐨勮竟涓婏紝鎸夊6绫崇殑灏哄锛屽钩琛屽壀涓嬶紝鍗虫垚涓鸿竟闀夸负6绫崇殑姝f柟褰
绛旓細13x2.7x1.5x1.3=68.445鍚 绛旓細杩欒妭杞︾閲岀殑鐓ゆ湁68.445鍚ㄣ傛湅鍙嬶紝璇枫愰噰绾崇瓟妗堛戯紝鎮ㄧ殑閲囩撼鏄垜绛旈鐨勫姩鍔涳紝璋㈣阿銆
绛旓細浣犳病鏈夎鏄庡壀涓嬬殑姝f柟褰㈢殑鏉′欢锛屽洜姝ゅ湪灏忎簬13绫崇殑涔嬪唴鐨勬墍鏈夊疄鏁伴兘绗﹀悎鏉′欢銆傝嫢浣犳墍瑕佹眰鐨勫壀涓嬬殑鏈澶ф鏂瑰舰鐨勯潰绉紝鍒欎互璇ユ鏂瑰舰鏈鐭竟涓鸿竟闀跨殑姝f柟褰㈠氨鏄鍚堣姹傜殑锛屽畠鐨勯潰绉 S=13*13=169 m²
绛旓細瑙f瀽锛氳繖涓壀涓嬬殑鏈澶ф鏂瑰舰鐨勮竟闀垮彧鑳芥槸浠ラ暱鏂瑰舰鐨勫8绫充綔涓鸿竟闀匡紝鎵浠ワ紝杩欎釜鏈澶ф鏂瑰舰鐨勯潰绉槸锛8脳8=64锛堝钩鏂圭背锛夌瓟锛氳繖涓鏂瑰舰鐨勯潰绉槸64骞虫柟绫炽
绛旓細闀垮彲鏀撅細9梅2=4涓︹1 瀹藉彲鏀撅細6梅2=3涓 楂樺彲鏀撅細5梅2=2涓︹1 鎵浠ヨ嚦澶氬彲浠ユ斁杩涳細4脳3脳2=24鍙
绛旓細鐭╁舰鍦扮殑闈㈢Н=x锛坸+4锛夛紝鐭╁舰鑺卞潧鐨勯暱瀹藉垎鍒槸x鍜寈-4锛屾墍浠ラ潰绉=x锛坸-4锛夋墍浠40=x锛坸+4锛-x锛坸-4锛夛紝绠楀嚭x=5锛屾墍浠ョ煩褰㈠湴鐨勯暱涓9锛屽涓5 5.璁惧師鏉ョ殑鍥涗綅鏁版槸1000a+100b+10c+d锛屽垯鐜板湪鐨勫洓浣嶆暟鏄1000b+100c+10d+a 鏂扮殑鏄師鏉ョ殑涓鍗婂3锛屽氨鏄 鍚勪釜浣嶆暟瀵瑰簲鐩哥瓑銆備粠涓綅鍑哄彂锛...
绛旓細鍏堟眰杩欎釜闀挎柟浣撲粨搴撶殑瀹圭Н锛9*6*5=270锛堢珛鏂圭背锛夋眰妫遍暱涓2绫崇殑鏈ㄧ锛2*2*2=8锛堢珛鏂圭背锛夎嚦澶氬彲浠ユ斁锛270/8=33...6(涓)鍥犱负绠卞瓙璁轰釜 鎵浠ユ渶澶氬彲瑁33涓
绛旓細10*6*5=300m3 300/2^3=37.5 鎵浠ヨ嚦澶37涓