圆柱的体积比和它等底等高的圆锥的体积大多少
等底等高的圆柱体积是圆锥体积的3倍,这里把圆柱体积看做3,把圆锥体积看做1,
圆柱的体积比与它等底等高的圆锥的体积大:(3-1)÷1=2倍,
圆柱的体积比与它等底等高的圆锥的体积大:2倍,
绛旓細浣犲ソ锛氫竴涓渾鏌辩殑浣撶Н姣斿拰瀹冪瓑搴曠瓑楂樼殑鍦嗛敟浣撳锛2鍊嶏級涓涓鍦嗘煴鐨勪綋绉鏄笌瀹冪瓑搴曠瓑楂樼殑鍦嗛敟浣撶殑3鍊嶏紝鎵浠ワ紝姣旇繖涓渾閿ヤ綋澶2鍊嶃
绛旓細鍦嗘煴鐨勪綋绉瘮涓庡畠绛夊簳绛夐珮鐨勫渾閿鐨勪綋绉ぇ锛氾紙3锛1锛壝1锛2鍊嶏紝鍦嗘煴鐨勪綋绉瘮涓庡畠绛夊簳绛夐珮鐨勫渾閿ョ殑浣撶Н澶э細2鍊嶏紝
绛旓細鍥犱负绛夊簳绛夐珮鐨勫渾鏌辩殑浣撶Н鏄渾閿ョ殑浣撶Н鐨3鍊嶏紝鎵浠鍦嗘煴鐨勪綋绉瘮涓庡畠绛夊簳绛夐珮鐨勫渾閿鐨勪綋绉ぇ鐨勮娉曟槸姝g‘鐨勶紟鏁呯瓟妗堜负锛氣垰锛
绛旓細瑙: 鍦嗘煴鐨勪綋绉瘮涓庡畠绛夊簳绛夐珮鐨勫渾閿澶( 2/3 鍊).
绛旓細鍦嗘煴鐨勪綋绉笌瀹冪瓑搴曠瓑楂樼殑鍦嗛敟鐨勪綋绉槸3鍊嶇殑鍏崇郴锛屽嵆姣斿间竴瀹氾紝鎴愭姣斾緥銆傝锛氱瓑浣庣瓑楂樼殑鍦嗘煴浣撲笌鍦嗛敟浣撶殑鍦伴潰绉负S,楂樹负h,鍒欏渾鏌变綋鐨勪綋绉负V1=Sh,鍦嗛敟浣撶殑浣撶НV2=Shx1/3,鍗砎2=V1x1/3 鍒欏渾鏌变綋涓庡渾閿ヤ綋鐨勪綋绉瘮涓轰笁姣斾竴銆
绛旓細鍦嗘煴鐨勪綋绉瘮涓庡畠绛夊簳绛夐珮鐨勫渾閿鐨勪綋绉ぇ涓夊垎涔嬩簩銆傝В锛氫护鍦嗘煴鐨勫簳闈㈠崐寰勪负r锛岄珮涓篽銆傞偅涔堝渾閿ョ殑搴曢潰鍗婂緞涔熶负r锛岄珮涓篽銆傚垯鍦嗘煴鐨勪綋绉疺1=搴曢潰闈㈢Нx楂 =蟺*r^2*h =蟺hr^2锛屽渾閿ョ殑浣撶НV2=1/3*搴曢潰闈㈢Нx楂 =1/3*蟺*r^2*h =1/3*蟺hr^2 閭d箞V1-V2=蟺hr^2-1/3*蟺hr^2 =2...
绛旓細wangke9905 锛屼綘濂斤細鍦嗘煴鐨勪綋绉瘮涓庡畠绛夊簳绛夐珮鐨勫渾閿浣撳ぇ锛堚垰锛変緷鎹細绛夊簳绛夐珮鐨勫渾鏌卞拰鍦嗛敟锛屽渾鏌辩殑浣撶Н鏄渾閿ヤ綋绉殑3鍊嶏紝鍦嗛敟浣撶Н鏄渾鏌变綋绉殑1/3銆
绛旓細绛夊簳绛夐珮鐨鍦嗘煴浣撶Н鏄鍦嗛敟浣撶Н鏄3鍊 鍦嗘煴浣撶殑浣撶Н姣斿拰瀹冪瓑搴曠瓑楂樼殑鍦嗛敟浣撲綋绉3锛1锛2鍊
绛旓細鍦嗘煴鐨勪綋绉瘮涓庡畠绛夊簳绛夐珮鐨勫渾閿鐨勪綋绉ぇ2鍊 鍒嗘瀽锛氬渾鏌辩殑浣撶Н姣旀槸涓庡畠绛夊簳绛夐珮鐨勫渾閿ョ殑浣撶Н鐨3鍊 澶э細3-1=2鍊
绛旓細鍦嗘煴鐨勪綋绉ぇ浜涓庡畠绛夊簳绛夐珮鐨勫渾閿鐨勪綋绉槸姝g‘鐨勩傚渾鏌辩殑浣撶Н涓庡渾閿ョ殑浣撶Н閮戒笌搴曢潰绉拰楂樻湁鍏筹紝鐢变簬鍦嗘煴涓庡渾閿ユ槸绛夊簳绛夐珮锛屾墍浠鍦嗘煴鐨勪綋绉瘮鍦嗛敟鐨勪綋绉ぇ銆傚渾鏌辩殑浣撶Н绛変簬涓庡畠绛夊簳绛夐珮鐨勫渾閿ョ殑浣撶Н鐨3鍊嶏紱鍙嶈繃鏉ヨ灏辨槸锛氬渾閿ョ殑浣撶Н绛変簬涓庡畠绛夊簳绛夐珮鐨勫渾鏌辩殑浣撶Н鐨3鍒嗕箣1銆傚渾鏌变笌鍦嗛敟鐨勫尯鍒佽仈绯 ...