一个没有盖的圆柱形水桶,底面直径和高都是4dm,如果1立方分米的水重1千克,这个水桶装水多少千克? 一个没有盖的圆柱形铁皮水桶，底面直径和高都是4dm，做一只这...
\u4e00\u4e2a\u6ca1\u6709\u76d6\u7684\u5706\u67f1\u5f62\u94c1\u76ae\u6c34\u6876\uff0c\u5e95\u9762\u76f4\u5f84\u548c\u9ad8\u90fd\u662f4dm\uff0c\u505a\u4e00\u53ea\u8fd9\u6837\u7684\u6c34\u6876\u81f3\u5c11\u8981\u7528\u591a\u5c11\u5e73\u65b9\u5206\u7c73\u94c1\u76ae\uff1f\u8fd9\u53ea\u6c34\uff081\uff09\u6c34\u6876\u7684\u4fa7\u9762\u79ef\uff1a3.14\u00d74\u00d74=50.24\uff08\u5e73\u65b9\u5206\u7c73\uff09\uff0c\u6c34\u6876\u7684\u5e95\u9762\u79ef\uff1a3.14\u00d7\uff084\u00f72\uff092=12.56\uff08\u5e73\u65b9\u5206\u7c73\uff09\uff0c1\u4e2a\u6c34\u6876\u7684\u8868\u9762\u79ef\u4e3a\uff1a50.24+12.56=62.8\uff08\u5e73\u65b9\u5206\u7c73\uff09\uff0c\uff082\uff0912.56\u00d74=50.24\uff08\u7acb\u65b9\u5206\u7c73\uff09=50.24\uff08\u5347\uff09\uff1b\u7b54\uff1a\u505a\u4e00\u4e2a\u6c34\u6876\u81f3\u5c11\u9700\u8981\u94c1\u76ae62.8\u5e73\u65b9\u5206\u7c73\uff0c\u8fd9\u4e2a\u6c34\u6876\u7684\u5bb9\u79ef\u662f50.24\u5347\uff0e
\u6c34\u6876\u7684\u4fa7\u9762\u79ef\uff1a3.14\u00d74\u00d74=50.24\uff08\u5e73\u65b9\u5206\u7c73\uff09\uff0c\u6c34\u6876\u7684\u5e95\u9762\u79ef\uff1a3.14\u00d7\uff084\u00f72\uff092=12.56\uff08\u5e73\u65b9\u5206\u7c73\uff09\uff0c1\u4e2a\u6c34\u6876\u9700\u8981\u7684\u94c1\u76ae\u7684\u9762\u79ef\u4e3a\uff1a50.24+12.56=62.8\uff08\u5e73\u65b9\u5206\u7c73\uff09\uff0c\u7b54\uff1a\u505a\u4e00\u53ea\u8fd9\u6837\u7684\u6c34\u6876\u81f3\u5c11\u8981\u752862.8\u5e73\u65b9\u5206\u7c73\u94c1\u76ae\uff0e
半径=2分米高=4分米
可装水
=体积×1
=（3.14×2²×4）×1
=50.24千克
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绛旓細鍗婂緞=2鍒嗙背 楂=4鍒嗙背 鍙姘 =浣撶Н脳1 =锛3.14脳2²脳4锛壝1 =50.24鍗冨厠 寰堥珮鍏翠负浣犺В绛旓紝绁濅綘瀛︿範杩涙锛佷竴鍒绘案杩523 涓轰綘瑙ｇ瓟~~濡傛灉浣犺鍙垜鐨勫洖绛旓紝璇风偣鍑讳笅闈㈢殑銆愰変负婊℃剰鍥炵瓟銆戞寜閽紝璋㈣阿~~濡傛灉杩樻湁鍏跺畠闂锛岃鍙﹀鍚戞垜姹傚姪锛岀瓟棰樹笉鏄擄紝鏁鐞嗚В~~
绛旓細搴曢潰绉槸 锛4梅2锛壝楋紙4梅2锛壝3.14锛12.56锛堝钩鏂瑰垎绫筹級渚ч潰绉槸 4脳3.14脳3.4锛42.704锛堝钩鏂瑰垎绫筹級鍋氫竴瀵硅繖鏍风殑姘存《鑷冲皯闇瑕侀搧鐨 锛12.56锛42.704锛壝2锛110.528锛堝钩鏂瑰垎绫筹級2锛涓涓病鏈夌洊鐨勫渾鏌卞舰姘存《锛堝帤搴︿笉璁★級锛岄珮鍜搴曢潰鐩村緞閮芥槸2dm.濡傛灉瑕佺粰杩欎釜姘存《鐨勫唴澶栭兘涓婃紗锛屾秱婕嗙殑閮ㄥ垎...
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绛旓細瑙ｏ細1绫=10鍒嗙背 锛1锛3.14脳锛10梅2锛²+3.14脳10脳10 =3.14脳25+3.14脳100 =78.5+314 =392.5锛堝钩鏂瑰垎绫筹級锛2锛3.14脳锛10梅2锛²脳10 =3.14脳25脳10 =78.5脳10 =785锛堝崌锛夌瓟锛氬埗浣滆繖鏍涓涓按妗闇瑕392.5骞虫柟鍒嗙背鐨閾佺毊锛涘鏋滅敤瀹冩潵瑁呮弧姘达紝鏈澶氳兘瑁785鍗囨按銆
绛旓細浣犲ソ锛氾紙1锛夌粰杩欎釜姘存《鍙ｅ姞涓閬撻搧涓濈畭锛岄渶瑕佸闀跨殑閾佷笣锛3.14脳20锛62.8锛堝帢绫筹級锛2锛夊仛杩欎釜姘存《,鑷冲皯闇瑕佹湪鏂欏灏戝钩鏂瑰垎绫筹紵^2琛ㄧず骞虫柟 3.14脳锛40梅2锛塣2锛3.14脳40脳60锛8792锛堝钩鏂瑰帢绫筹級锛87.92锛堝钩鏂瑰垎绫筹級锛3锛夎繖鍙按妗惰兘瑁呮按澶氬皯鍗冨厠锛燂紙1鍗囨按閲1鍗冨厠锛3.14脳锛40梅2锛塣2脳60锛...
绛旓細杩欎釜鏄眰姘存《鐨瀹圭Н鏄灏戝惂锛熼偅灏卞ソ鍋氫簡銆傛按妗剁殑瀹圭Н鏄細4脳4脳3.14脳4 =16脳3.14脳4 =50.24脳5 =200.96锛坉m³锛夌瓟锛氭按妗剁殑瀹圭Н鏄200.96绔嬫柟鍒嗙背銆傚簲璇ュ氨鏄繖鏍浜嗭紝甯屾湜鎴戠殑鍥炵瓟鑳界粰浣犲甫鏉ヤ竴浜涘府鍔╋紝绁濅綘瀛︿範杩涙锛侊紒
绛旓細鍗婂緞涓1 2*3.14*2.4+1鐨骞虫柟*3.14=18.212(骞虫柟鍒嗙背) 鍋氳繖涓姘存《瑕佺敤閾佺毊18.212骞虫柟鍒嗙背.
绛旓細琛ㄩ潰绉細2*蟺*6*8+蟺*6*6=414.69骞虫柟鍒嗙背 瀹圭Н锛毾*6*6*8=904.78绔嬫柟鍒嗙背
