用长是六厘米宽是四厘米高是两厘米的长方体木块搭成一个正方体，至少要多少个长方体木块 用长6厘米宽4厘米高3厘米的长方体木块叠成一个正方体，至少要...
\u7528\u957f\u662f6\u5398\u7c73\u5bbd\u662f4\u5398\u7c73\u9ad8\u662f2\u5398\u7c73\u7684\u957f\u65b9\u4f53\u6728\u5757\u642d\u6210\u4e00\u4e2a\u6b63\u65b9\u4f53\uff0c\u81f3\u5c11\u9700\u8981\u8fd9\u79cd\u957f\u65b9\u4f53\u6728\u5757\u591a\u5c11\u5757(6\u00d72)\u00d7(6\u00d72)=144
144\u00f7(6\u00d74\u00d72)=3
\u4e09\u4e2a
6\u30014\u30013\u7684\u6700\u5c0f\u516c\u500d\u6570\u662f\uff1a12\u3002
\u7b54\uff1a\u81f3\u5c11\u7528\u8fd9\u6837\u7684\u6728\u575712\u5757\u3002
绛旓細鎶婇暱鏂逛綋鏈澶х殑涓や釜闈㈠悎璧锋潵,杩欐牱灏卞彉鎴愪竴涓暱6鍘樼背,瀹3鍘樼背,楂2鍘樼背鐨勯暱鏂逛綋 (6脳3+6脳2+3脳2)脳2=72骞虫柟鍘樼背
绛旓細鈶犳１闀挎诲拰鏄(6+4+4)脳4=56(鍘樼背)鈶′綋绉鏄6脳4脳4=96(绔嬫柟鍘樼背)鈶㈣〃闈㈢Н鏄(6脳4+6脳4+4脳4)脳2=128(骞虫柟鍘樼背)
绛旓細鏈澶х殑闈㈡槸闀垮拰瀹芥渶澶х殑闈紝鏈闀跨殑闀垮拰瀹藉垎鍒槸8鍜4鍘樼背锛岀瓟锛氭渶澶х殑闈㈢殑闈㈢Н S=8*4=32骞虫柟鍘樼背銆
绛旓細瑙ｇ瓟濡備笅:6脳4=24锛鍘樼背锛4脳4=16锛堝帢绫筹級锛6+4锛壝2=20锛堝帢绫筹級锛24+16锛壝2=80锛堝帢绫筹級80梅20=4 6脳4=24锛堝钩鏂瑰帢绫筹級24脳16=384锛堝钩鏂瑰帢绫筹級384梅24=16 绛:鍛ㄩ暱鏄師鏉ョ殑4鍊嶏紝闈㈢Н鏄師鏉ョ殑16鍊嶃
绛旓細鍏勾绾т笂鍐屾暟瀛︾粌涔浜鎬庝箞濡備笅锛1銆 7.2骞虫柟绫=锛720 锛夊钩鏂瑰垎绫 38 绔嬫柟绫=锛 38000 锛夌珛鏂瑰垎绫 2銆佹妸涓涓暱6鍘樼背銆瀹4鍘樼背銆楂4.5鍘樼背鐨勯暱鏂逛綋鎴垚涓や釜闀挎柟浣擄紝琛ㄩ潰绉渶澶у鍔狅紙52 锛夊钩鏂瑰帢绫筹紝鏈灏忓鍔狅紙36 锛夊钩鏂瑰帢绫炽3銆佸ぇ灏忎袱涓鏂逛綋鐨勬１闀挎瘮鏄4鈭3锛涘ぇ灏忔鏂逛綋鐨勮〃闈㈢Н姣旀槸锛16...
绛旓細杩欎釜闀挎柟浣撶殑琛ㄩ潰绉箣鍜屽氨鏄彲浠ョ畻涓変釜鐩搁偦闀挎柟褰㈤潰绉箣鍜岋紝鐒跺悗鍒嗗埆涔樹互2锛屽氨寰楀埌鍏釜闈㈢殑琛ㄩ潰绉箣鍜屻傚叿浣撳涓嬶細(6脳5+6脳2.5+5脳2.5)脳2 =(30+15+12.5)脳2 =57.5脳2 =115(鍘樼背²)杩欎釜闀挎柟浣撹〃闈㈢Н鏄115鍘樼背²銆
绛旓細鍥犱负闀挎柟浣撴鏋舵湁12鏉℃１锛岄暱瀹介珮鍚4涓紝璁鹃珮X鍘樼背 4锛6+4+X锛=60 40+4X=60 4X=20 X=5 绛旓細楂5鍘樼背銆傛垜鏄垵涓鐨勶紝棰樼洰寰堢畝鍗曘
绛旓細闀挎柟浣撴１闀挎诲拰=(闀+瀹+楂)脳4 闀挎柟浣撶殑楂樻槸:52梅4-6-4 =13-6-4 =3(鍘樼背)绛:闀挎柟浣撶殑楂樻槸3鍘樼背銆
绛旓細鎷兼帴鍚庝綋绉細6*3*2*2=72绔嬫柟鍘樼背銆侫銆佹渶澶ч潰鐩告帴锛闀6鍜屽3涓嶅彉锛岄珮鍙涓4锛屾嫾鎺ュ悗鐨勪綋绉负锛6*3*4=72绔嬫柟鍘樼背 B銆佹渶灏忛潰鐩告帴锛12*3*2=72绔嬫柟鍘樼背 C銆佸眳涓潰鐩告帴锛6*6*2=72绔嬫柟鍘樼背 鎷兼帴鍓嶆瘡涓暱鏂逛綋闈㈢Н锛氾紙2*3+2*6+3*6锛*2=36骞虫柟鍘樼背锛2涓暱鏂逛綋闈㈢Н=72骞虫柟鍘樼背 鎷兼帴鍚庯紝...
绛旓細6梅2=3 4梅2=2 5梅2=2鈥︹1 鎵浠:3脳2脳2=6 鍙互鍒囨垚6涓１闀2鍘樼背鐨勫皬姝ｆ柟浣撱
