一个圆柱形粮囤,从里面量高是5米,底面直径是高的 。如果每立方米稻谷约重545千克,那么这个粮囤能装稻
\u4e00\u4e2a\u5706\u67f1\u5f62\u7cae\u56e4\uff0c\u4ece\u91cc\u9762\u91cf\u9ad8\u662f5\u7c73\uff0c\u5e95\u9762\u76f4\u5f84\u662f\u9ad8\u76842/5\uff0c\u5982\u679c\u6bcf\u7acb\u65b9\u7c73\u7a3b\u8c37\u7ea6\u91cd545\u5343\u514b\uff0c\u5e95\u9762\u76f4\u5f84\u662f
5\u00d72/5\uff1d2\uff08\u7c73\uff09
\u5e95\u9762\u534a\u5f84\u662f
2\u00f72\uff1d1\uff08\u7c73\uff09
\u5bb9\u79ef\u662f
1\u00d71\u00d73.14\u00d75\uff1d15.7\uff08\u7acb\u65b9\u7c73\uff09
\u7cae\u56e4\u80fd\u88c5\u7a3b\u8c37
545\u00d715.7\uff1d8556.5\uff08\u5343\u514b\uff09
5\u4e583\5\u7b49\u4e8e3
3\u9664\u4ee52\u7b49\u4e8e1.5
1.5\u4e581.5\u4e583.14\u4e585\u7b49\u4e8e35.325
35.325\u4e58545\u7b49\u4e8e19252.125
半径:5× ÷2=1.5(米),3.14×1.5 2 ×5×545=19252.125(千克) |
绛旓細搴曢潰鍗婂緞锛(1/2)*5*(3/5)=3/2绫 浣撶Н锛3.14*(3/2)^2*5=35.325绔嬫柟绫 鑳借绋昏胺澶氬皯鍗冨厠锛35.325*545=19252.125鍗冨厠
绛旓細楂=5绫 搴曢潰鍗婂緞=5脳5鍒嗕箣2=2绫 鍙互瑁呯ɑ璋 =锛3.14脳2²脳5锛壝545 =34226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~~...
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绛旓細鍦嗛敟鍗婂緞=鍦嗘煴鍗婂緞=4绫 鍦嗘煴楂=5绫 鍦嗛敟楂=3绫 绮洡鑳借绋昏胺 =鍦嗘煴浣撶Н+鍦嗛敟浣撶Н =3.14脳4²脳5+3鍒嗕箣1脳3.14脳4²脳3 =301.44绔嬫柟绫 ~涓鍒绘案杩523涓轰綘瑙g瓟锛岀浣犲涔犺繘姝~~濡傛灉浣犺鍙垜鐨勫洖绛旓紝璇峰強鏃剁偣鍑汇愰噰绾充负婊℃剰鍥炵瓟銆戞寜閽畘~鎵嬫満鎻愰棶鑰呭湪瀹㈡埛绔笂璇勪环鐐光滄弧鎰忊濆嵆鍙瘇...
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