一立方混凝土能灌多少0.3米×2米的圆形柱子?
直径0.3米,高2米的圆柱每根需要混凝土(圆柱的体积):V=πr²h
=3.14×(0.3/2)×(0.3/2)×2
=3.14×0.15×0.15×2
=0.1413(立方米)
所以1立方米的混凝土能灌(浇筑)这样的柱子:
1÷0.11413
=8.761938141
≈8.76(根)第9根浇筑不完。
因此,理论上可以浇筑8根这样的柱子。
绛旓細=3.14脳锛0.3/2锛壝楋紙0.3/2锛壝2 =3.14脳0.15脳0.15脳2 =0.1413锛堢珛鏂圭背锛夋墍浠1绔嬫柟绫崇殑娣峰嚌鍦熻兘鐏岋紙娴囩瓚锛夎繖鏍风殑鏌卞瓙:1梅0.11413 =8.761938141 鈮8.76锛堟牴锛绗9鏍规祰绛戜笉瀹屻傚洜姝わ紝鐞嗚涓婂彲浠ユ祰绛8鏍硅繖鏍风殑鏌卞瓙銆
绛旓細X=1/0.3*0.4=1/0.12=100/12鈮8.33m
绛旓細璁$畻娣峰嚌鍦熸柟閲 棣栧厛瑕佺‘瀹氫綘璇寸殑120*0.3*0.6绫崇殑鏄竴鍧楁澘锛屾病鏈夊浣撲粈涔堢殑銆閭f祰绛戣繖涓昂瀵哥殑娣峰嚌鍦熼噺灏辨槸120*0.3*0.6=21.6鏂銆傚晢鍝佹贩鍑濆湡锛氭按娉ョ綈杞︿竴鑸竴杞︽槸9鏂规垨鑰12鏂癸紝浣犺繖涓9鏂圭殑缃愯溅3瓒熷氨鍙互浜嗭紝涓鑸车绔欎細涓嬫枡鍒扮浜岃溅锛屼竴娆℃у彂鍑烘潵锛屾渶鍚庝竴杞︿細鎵撶數璇濈粰浣狅紝璁╀綘纭畾杩樿澶氬皯...
绛旓細1銆佹垜浠渶瑕佹牴鎹娣峰嚌鍦鐨勫舰鐘舵潵纭畾璁$畻鐨勬柟娉曪紝濡傛灉璁捐鐨勬槸闀挎柟褰㈠舰鐘讹紝闇瑕佹祴閲忎竴涓嬪畠鐨勯暱搴︺佸搴︺侀珮搴︼紝鐒跺悗鐩存帴鐩镐箻锛屽氨鑳藉寰楀埌瀹冪殑绔嬫柟鏁帮紝杩欎篃鏄牴鎹垜浠墍瀛﹁繃鐨勭珛鏂圭殑璁$畻鍏紡鎵寰楁潵鐨勩2銆佸鏋滄贩鍑濆湡鐨勫舰鐘舵槸鍦嗘煴褰紝鎴戜滑闇瑕佷簡瑙d竴涓嬪畠鐨勫簳闈㈢Н浠ュ強娣峰嚌鍦熺殑楂樺害锛屼粠鑰岄氳繃鍦嗘煴鐨勪綋绉叕寮忥紝灏...
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