再一块平地上挖一个底面半径是4m的圆柱形水池,池深1m,需要挖出多少的土？ 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
π×4^2×1=50.26立方土明白了请采纳
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...
绛旓細瑙ｏ細宸茬煡搴曢潰鍛ㄩ暱涓18.86绫筹紝鍒搴曢潰鍗婂緞涓R=18.86梅锛2脳蟺锛=3绫 鍒欏渾鏌变綋鐨勪綋绉负V=S脳h=蟺R²h=蟺脳9脳3=84.78绔嬫柟绫
绛旓細瑕佹寲鍦燂紙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=502400鍏 璐...
