在一块平地上挖一个底面半径是四米的圆柱形水池池深一米需要挖出多少,平方米? 在一块平地上挖一个圆柱形水池,水池深4米,底面直径为6米,那...
\u5728\u4e00\u5757\u5e73\u5730\u4e0a\u6316\u4e00\u4e2a\u5e95\u9762\u79ef\u662f\u56db\u7c73\u7684\u5706\u67f1\u5f62\u6c34\u6c60\u6c60\u6df1\u4e00\u7c73\u9700\u8981\u6316\u51fa\u591a\u5c11\u7acb\u65b9\u7c73\u7684\u571f\uff1f\u5e95\u9762\u79ef\u4e0d\u53ef\u80fd\u662f\u56db\u7c73\uff0c\u7c73\u662f\u957f\u5ea6\u7684\u5355\u4f4d\uff0c\u800c\u4e0d\u662f\u9762\u79ef\u7684\u5355\u4f4d\u3002\u5982\u679c\u5728\u4e00\u5757\u5e73\u5730\u4e0a\u6316\u4e00\u4e2a\u5e95\u9762\u79ef\u662f\u56db\u5e73\u65b9\u7c73\u7684\u5706\u67f1\u5f62\u6c34\u6c60\u6c60\u6df1\u4e00\u7c73\u9700\u8981\u63164\u00d71=4\u7acb\u65b9\u7c73\u7684\u571f\u3002
3.14\u00d7\uff086\u00f72\uff092=3.14\u00d79=28.26\uff08\u5e73\u65b9\u7c73\uff09\uff1b28.26\u00d74=113.04\uff08\u7acb\u65b9\u7c73\uff09\uff0c\u7b54\uff1a\u6c34\u6c60\u7684\u5360\u5730\u9762\u79ef\u662f28.26\u5e73\u65b9\u7c73\uff0c\u9700\u8981\u6316\u571f113.04\u7acb\u65b9\u7c73\uff0e\u6545\u7b54\u6848\u4e3a\uff1a28.26\uff0c113.04\uff0e
3.14×4^2×1=50.24立方米绛旓細V=3.14脳4脳4脳1=50.24绔嬫柟绫
绛旓細3.14脳4^2脳1=50.24绔嬫柟绫
绛旓細蟺脳4^2脳1=50.26绔嬫柟鍦 鏄庣櫧浜嗚閲囩撼
绛旓細2.5脳2.5脳蟺脳1.4 脳1.6= 14蟺锛堝惃锛(*^__^* *^__^* *^__^*)鏈変粈涔堜笉鏄庣櫧鍙互瀵硅棰樼户缁拷闂紝闅忔椂鍦ㄧ嚎绛 濡傛灉鎴戠殑鍥炵瓟瀵逛綘鏈夊府鍔╋紝璇峰強鏃堕変负婊℃剰绛旀锛岃阿璋
绛旓細绗竴闂細瑕佹寲鍦燂紙2512绔嬫柟绫筹級3.14脳锛40梅2锛²脳2=2512绔嬫柟绫 绗簩闂細闇瑕佺摲鐮栵紙1507.2骞虫柟绫筹級搴曢潰绉槸锛3.14脳锛40梅2锛²=1256骞虫柟绫 渚ч潰绉槸锛3.14脳40脳28=251.2骞虫柟绫 闇瑕佺摲鐮栵細1256+251.2=1507.2骞虫柟绫 绗笁闂細涓鍏遍渶瑕侊紙653120鍏冿級鎸栧湡闇瑕侀挶锛200脳2512=502...
绛旓細16銆佸湪楂樹负12cm锛搴曢潰鍗婂緞涓4.5cm鐨勬棤鐩栧渾鏌卞舰鐨勭洅鍐呮斁鍏ヤ竴鏍圭粏鏈ㄦ锛岃浣挎湪妫掍笉闇插嚭锛屽垯鏈ㄦ鏈闀夸笉鑳借秴杩 涓夈 瑙g瓟棰 17銆佸鍥撅紝鍦ㄥ洓杈瑰舰ABCD涓紝AB锛20锛孊C锛15锛孋D锛7锛孉D锛24锛屸垹B锛900锛屾眰鈭燚鐨勫害鏁般18銆佸鍥撅紝CD鏄疪t鈻矨BC鐨勬枩杈笰B涓婄殑楂橈紝鑻B锛17锛孉C锛15锛屾眰CD鐨勯暱銆19銆佸凡鐭...
绛旓細鍦骞冲湴涓婃寲涓涓鍦嗘煴褰㈢殑姘存睜锛屾按姹犳繁4m銆傜洿寰勬槸6绫筹紝杩欎釜姘存睜鐨勫崰鍦帮紙28.26锛夊灏戝钩鏂圭背锛岄渶瑕佹寲鍦燂紙113.04锛夌珛鏂圭背锛熷崰鍦伴潰绉細3.14脳锛6梅2锛塣2锛28.26锛堝钩鏂圭背锛夐渶瑕佹寲鍦燂細28.26脳4锛113.04锛堢珛鏂圭背锛夋湁涓涓渾鏌变綋锛屼綋绉槸785绔嬫柟鍘樼背銆搴曢潰鍗婂緞鏄10cm姹備粬鐨勪晶闈㈢Н 楂樹负锛785梅锛3.14脳...
绛旓細3.14脳锛6梅2锛2=3.14脳9=28.26锛堝钩鏂圭背锛夛紱28.26脳4=113.04锛堢珛鏂圭背锛夛紝绛旓細姘存睜鐨勫崰鍦伴潰绉槸28.26骞虫柟绫筹紝闇瑕佹寲鍦113.04绔嬫柟绫筹紟鏁呯瓟妗堜负锛28.26锛113.04锛
绛旓細瑕鎸栦竴涓簳闈鍛ㄩ暱鏄125.6绫崇殑鍦嗘煴褰㈠偍姘存睜,濡傛灉瑕佹眰鑳藉偍姘392绔嬫柟绫,杩欎釜鍌ㄦ按姹犺嚦灏戝簲璇ユ寲澶氬皯绫虫繁 搴曢潰鍗婂緞鏄 125.6梅3.14梅2锛20绫 搴曢潰绉槸 20脳20脳3.14锛1256骞虫柟绫 杩欎釜鍌ㄦ按姹犺嚦灏戝簲璇ユ寲 392梅1256锛0.31绫 鎸栦竴涓簳闈㈢洿寰鏄4绫,娣5绫崇殑鍦嗘煴褰㈠偍姘存睜锛屽叡闇鎸栧湡澶氬皯绔嬫柟绫...
绛旓細搴曢潰鍗婂緞鏄18.84梅(2脳3.14)锛3锛堢背锛夋寲鍦3.14脳3脳3脳3锛84.78(绔嬫柟绫)