在一块平地上挖一个底面半径是四米的圆柱形水池，深深一米，需要挖多少立方米的土？ 在平地上挖一个圆柱形的水池，水池的深是4米，直径是6米，这个...
\u5728\u4e00\u5757\u5e73\u5730\u4e0a\u6316\u4e00\u4e2a\u5706\u67f1\u5f62\u6c34\u6c60\uff0c\u6c34\u6c60\u6df14\u7c73\uff0c\u5e95\u9762\u76f4\u5f84\u4e3a6\u7c73\uff0c\u90a3\u4e48\u6c34\u6c60\u7684\u5360\u5730\u9762\u79ef\u662f______\u5e73\u65b9\u7c73\uff0c\u9700\u8981\u6316\u571f3.14\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
r=d\u00f72=6\u00f72=3\uff08\u7c73\uff09\uff1bS=\u03c0r2=3.14\u00d732=3.14\u00d79=28.26\uff08\u5e73\u65b9\u7c73\uff09\uff1bV=sh=28.26\u00d74=113.04\uff08\u7acb\u65b9\u7c73\uff09\uff0e\u7b54\uff1a\u8fd9\u4e2a\u6c34\u6c60\u5360\u573028.26\u5e73\u65b9\u7c73\uff0c\u9700\u6316\u571f113.04\u7acb\u65b9\u7c73\uff0e
V=3.14×4×4×1=50.24立方米4×4×π×1=16π
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绛旓細姘存繁鏄灏戝帢绫?4锛庡仛涓涓暱鏂逛綋鐨勬荡缂革紙鏃犵洊锛,闀8鍒嗙背,瀹4鍒嗙背,楂6鍒嗙背,鑷冲皯闇瑕佸灏戝钩鏂瑰垎绫崇殑鐜荤拑?濡傛灉姣忓钩鏂瑰垎绫崇幓鐠4鍏冮挶,鑷冲皯闇瑕佸灏戦挶涔扮幓鐠?5銆涓涓簳闈㈡槸姝ｆ柟褰㈢殑闀挎柟浣,搴曢潰鍛ㄩ暱鏄24鍘樼背,楂樻槸10鍘樼背,姹傚畠鐨勪綋绉.6銆佹妸240绔嬫柟绫崇殑鍦熼摵鍦ㄩ暱60绫,瀹40绫崇殑骞冲湴涓,鍙互閾哄鍘?
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绛旓細鍗犲湴闈㈢Н300骞虫柟绫 鎸栧嚭450绔嬫柟绫
绛旓細鍖呰缃愯璁￠棶棰 1銆 鈥滅櫧鐚濇礂琛ｇ矇妗 鈥滅櫧鐚濇礂琛ｇ矇妗剁殑褰㈢姸鏄瓑杈瑰渾鏌(濡傚彸鍥炬墍绀) , 鑻ュ绉竴瀹氫笖搴曢潰涓庝晶闈㈠帤搴︿竴鏍,闂珮涓搴曢潰鍗婂緞鏄 浠涔堝叧绯...杩欎篃姝ｉ獙璇 浜嗚嫃闇嶅鏋楁柉鍩烘墍璇寸殑: 鈥滃湪浜虹殑蹇冪伒娣卞,閮芥湁涓绉嶆牴娣辫拏鍥虹殑闇瑕,杩欏氨鏄笇鏈涜嚜宸辨槸 涓涓彂鐜拌 銆佺爺绌惰呫佹帰绱㈣呫 鈥濊繖涔熸鏄爺绌...
绛旓細搴曢潰鍗婂緞锛8梅2=4锛堢背锛夊簳闈㈢Н锛4²脳3.14=50.24锛堝钩鏂圭背锛変綋绉細50.24脳1脳1/3鈮16.75锛堢珛鏂圭背锛
绛旓細1.浣撹偛鍦虹敤37.5绔嬫柟绫崇殑鐓ゆ福閾鍦ㄤ竴鏉￠暱100绫冲7.5绫崇殑閬撹矾涓娿傜叅娓ｅ彲浠ラ摵澶氬帤?2.涓涓暱鏂逛綋鐨勫鍣,搴曢潰绉槸16骞虫柟鍒嗙背,瑁呯殑姘撮珮6鍒嗙背,鐜版斁涓涓綋绉槸24绔嬫柟鍒嗙背鐨勯搧鍧椼傝繖鏃剁殑姘撮潰楂樺灏?3.鐢2100涓１鏄１闀挎槸1鍘樼背鐨勬鏂逛綋鍫嗘垚涓涓暱鏂逛綋,浠栫殑楂樻槸10鍘樼背,闀垮拰瀹介兘澶т簬楂樸傚畠鐨勫簳闈㈠懆闀挎槸澶氬皯?4.涓...
