做一个无盖的长方体水桶，长和宽是5分米，高是8分米，做这个水桶至少需多少铁皮
\u95ee\u98981. \u8981\u7528\u94c1\u76ae\u505a\u4e00\u4e2a\u65e0\u76d6\u957f\u65b9\u4f53\u7684\u6c34\u6876\uff0c\u957f8\u5206\u7c73\u3002\u5bbd5\u5206\u7c73\uff0c\u9ad86\u5206\u7c73\uff0c\u81f3\u5c11\u9700\u8981\u591a\u5c11\u5e73\u65b9\u7c73\u7684\u94c1\u76ae\uff1f8\u00d75+\uff088\u00d76+5\u00d76\uff09\u00d72
=40+156
=196\u5e73\u65b9\u5206\u7c73
8\u00d75\u00d75=200\u7acb\u65b9\u5206\u7c73
\u628a\u6700\u5927\u7684\u90a3\u4e2a\u9762\u53bb\u6389\u4e00\u4e2a\u7684\u8bdd\uff0c\u7528\u7684\u94c1\u76ae\u6700\u5c11\uff0c\u6240\u4ee5
1\u3001\u94c1\u76ae\u7528\u91cf\uff1a8*4*1+8*3*2+4*3*2=104\u5e73\u65b9\u5206\u7c73
2\u3001\u6c34\u7bb1\u5bb9\u79ef\uff1a8*4*3=96\u7acb\u65b9\u5206\u7c73
3\u3001\u6c34\u91cd\u91cf\uff1a96*1=96\u5343\u514b
5×5+5×8×4＝185
绛旓細185骞虫柟鍒嗙背
绛旓細绛旓細鍋氳繖涓闀挎柟浣撴按妗鑷冲皯闇瑕62骞虫柟鍒嗙背鐨勯搧鐨
绛旓細瀹圭Н锛8脳5脳3=120绔嬫柟鍒嗙背=120鍗
绛旓細灏辨槸鍏釜闈㈢殑闈㈢Н鍑忓幓鐩栧瓙鐨勯潰绉氨鍙互鍟︼紝鏄0.74骞虫柟鍒嗙背
绛旓細25cm=2.5dm 0.2m=2dm 锝鏃犵洊灏辨槸灏戜簡椤朵笂鐨勭洊涓朵负锛氶暱脳瀹=ab锝 锛3脳2.5锛2脳2.5锛壝2锛3脳2=31锛坉m²锛塚闀=abh=3脳2脳2.5=15锛坉m³锛=15锛圠锛
绛旓細闂涓锛氶渶閾佺毊30*20+30*15*2+15*20*2=2100骞虫柟鍘樼背=21骞虫柟鍒嗙背 娉ㄦ剰鐐癸細鈶犵敱浜鏃犵洊锛鍙渶绠椾簲涓潰銆傗憽绠楀ソ鍚庯紝瑕佹妸骞虫柟鍘樼背鎹㈢畻鎴愬钩鏂瑰垎绫炽1骞虫柟鍒嗙背=100骞虫柟鍘樼背 闂浜屻佸彲瑁呮按30*15*20=9000绔嬫柟鍘樼背=9鍗 娉ㄦ剰鐐癸細鈶犲嵆涓烘眰闀挎柟浣鐨勪綋绉 鈶′竴鍗=1绔嬫柟鍒嗙背锛屾墍浠ヨ鎶婄粨鏋滅殑绔嬫柟鍘樼背鎹㈢畻...
绛旓細瑙ｏ細涔熷氨鏄畻绠姘存《鐨勫绉=闀棵楀脳楂=4.5脳4.5脳5=101.25锛堢珛鏂瑰垎绫筹級2銆涓涓暱鏂逛綋娌圭锛屼粠閲岄潰閲1.5绫锛屽6鍒嗙背锛岄珮5鍒嗙背銆傚鏋滄瘡鍗囨补鐨勮川閲忔槸0.75鍗冨厠锛岄偅涔堣繖涓补绠卞彲瑁呮补澶氬皯鍗冨厠锛熻В锛1.5绫=15鍒嗙背 15脳6脳5=450锛堢珛鏂瑰垎绫筹級鍥犱负 1 d m ³= 1 鍗 鎵浠 杩欎釜娌圭鍙...
绛旓細40cm锛4dm 30cm锛3dm 60cm锛6dm 4脳3+4脳6脳2+3脳6脳2=96锛堝钩鏂瑰垎绫筹級杩欐牱灏辨槸鑷冲皯闇瑕96骞虫柟鍒嗙背
绛旓細閾佺毊=4脳4+4脳4脳6=112骞虫柟鍒嗙背
绛旓細鏃犵洊,绠5涓潰 2.5脳2.5锛嬶紙2.5脳4锛2.5脳4锛壝2锛46.25锛堝钩鏂瑰垎绫筹級
