直径0.45米的圆球，体积是多少，该怎么计算？ 直径一米的圆球体积怎么算
\u76f4\u5f840.45\u7c73\u7b49\u4e8e\u591a\u5c11\u7c73\u76f4\u5f840.45\u7c73,
\u7b49\u4e8e0.45\u7c73,
\u5468\u957f\u7b49\u4e8e3.14*0.45=1.413\u7c73
\u7403\u4f53\u79ef\u6709\u516c\u5f0f\uff0c \u4e09\u5206\u4e4b\u56db\u03c0*R\u7684\u4e09\u6b21\u65b9
R\u662f\u534a\u5f84\uff0c\u76f4\u5f84\u9664\u4ee5\u4e8c\u5c31\u662f\u534a\u5f84\u3002
R=0.5\u7c73
\u4ee3\u5165\u516c\u5f0fV\u7ea6\u7b49\u4e8e0.52\u7acb\u65b9\u7c73\u3002
\u6269\u5c55\u8d44\u6599\uff1a\u7403\u4f53\u6027\u8d28\uff1a
1\u3001\u7403\u5fc3\u548c\u622a\u9762\u5706\u5fc3\u7684\u8fde\u7ebf\u5782\u76f4\u4e8e\u622a\u9762\u3002
2\u3001\u7403\u5fc3\u5230\u622a\u9762\u7684\u8ddd\u79bbd\u4e0e\u7403\u7684\u534a\u5f84R\u53ca\u622a\u9762\u7684\u534a\u5f84r\u6709\u4e0b\u9762\u7684\u5173\u7cfb\uff1ar^2=R^2-d^2
3\u3001\u7403\u9762\u88ab\u7ecf\u8fc7\u7403\u5fc3\u7684\u5e73\u9762\u622a\u5f97\u7684\u5706\u53eb\u505a\u5927\u5706\uff0c\u88ab\u4e0d\u7ecf\u8fc7\u7403\u5fc3\u7684\u622a\u9762\u622a\u5f97\u7684\u5706\u53eb\u505a\u5c0f\u5706\u3002
4\u3001\u5728\u7403\u9762\u4e0a\uff0c\u4e24\u70b9\u4e4b\u95f4\u7684\u6700\u77ed\u8fde\u7ebf\u7684\u957f\u5ea6\uff0c\u5c31\u662f\u7ecf\u8fc7\u8fd9\u4e24\u70b9\u7684\u5927\u5706\u5728\u8fd9\u4e24\u70b9\u95f4\u7684\u4e00\u6bb5\u52a3\u5f27\u7684\u957f\u5ea6\uff0c\u6211\u4eec\u628a\u8fd9\u4e2a\u5f27\u957f\u53eb\u505a\u4e24\u70b9\u7684\u7403\u9762\u8ddd\u79bb\u3002
V=4/3×π(0.45÷2)³=0.04768875立方米
4/3πr³=4/3×π(0.45÷2)³
先算出半径
三分之四派 r的三次方
绛旓細90鍏垎=90鍘樼背=0.9绫 0.9梅2=0.45锛堢背锛3.14脳0.45²脳4.2 =3.14脳0.2025脳4.2 =2.67057锛堢珛鏂圭背锛
绛旓細0.45m楂榵0.25m鐩村緞鐨鍦嗘煴浣撶Н涓:3.14脳锛0.25梅2锛²脳0.45 =0.022078125绔嬫柟绫 =22.078125绔嬫柟鍒嗙背 =22078.125绔嬫柟鍘樼背
绛旓細鍦嗘煴浣撶殑浣撶Н=搴曢潰绉 x 楂 宸茬煡鐩村緞鏄0.9锛岄偅涔堝崐寰涓0.45绫锛涘簳闈㈢НS=3.14x0.45x0.45=0.63585 鍦嗘煴浣撲綋绉疺=S X h=0.63585 X 6 =3.8185绔嬫柟绫
绛旓細璇烽噰绾
绛旓細锛堣繖涓嶆槸涓涓叏鐞冿紝鏍归儴涓轰簡鏀惧湪骞抽潰涓婂墛骞充簡涓鍧楋級鍏ㄧ悆鍗婂緞R=2.5/2=1.25m 浣撶Н锛歏=蟺h^2(R-h/3)=蟺*2.4^2锛1.25-2.4/3锛=蟺*2.4*2.4*0.45 =2.592蟺鈮8.13888m^3
绛旓細v=sh=3.14*0.45*0.45*8=15.9806
绛旓細棣栧厛鏉ヨ锛屽洜涓轰粬缁欑殑鍗曚綅鏄绫充簩銆備粬瑕佹眰鐨勬槸绔嬫柟绫冲崟浣嶅氨涓嶅悓鎰忎簡锛屾墍浠ョ涓姝ヤ綘瑕佺粺涓鍗曚綅銆450姣背涔熷氨鏄鏄瓑浜0.45绫銆300姣背绛変簬0.3绫炽250姣背锛岀瓑浜0.25绫炽備箣鍚庝綘鎶婅繖浜涙暟鍟嗗煄鐨勪竴璧峰氨鏄粬鐨勭珛鏂圭背浜嗐備綘涔熷彲浠ョ洿鎺ョ敤4005脳300脳200浜斾箣鍚庡畠鐨勪綋绉槸姣背銆備箣鍚庡憿锛屼綘鍐嶈浆鎹㈡垚鏉庢柟鏁...
绛旓細鍗婂緞鏄0.9梅2=0.45(绫)浣撶Н鏄3.14脳0.45²脳74鈮47(绔嬫柟绫
绛旓細鍘熼锛氱洿寰0.9绫抽珮1绫崇殑妗剁洓姘村灏戠珛鏂?杩欎釜闂涓嶈鍑虹幇涓や釜鍙婁袱涓互涓婄瓟妗堢殑銆俈鍦嗘煴=蟺*r*r*h鍗筹細鍦嗘煴浣撶Н=鍦嗗懆鐜囦箻浠ュ崐寰勭殑骞虫柟鍐嶄箻浠ラ珮銆鐩村緞涓0.90绫筹紝鍗婂緞涓0.90/2=0.45绫充綋绉:V=3.14*0.45*0.45*1.00=0.6359绔嬫柟绫炽傜瓟锛氱洿寰0.9绫筹紝楂1绫崇殑妗讹紝鐩涙按0.6359绔嬫柟绫炽
绛旓細闂渾鏌遍噷鍙互鏀惧灏戞柟娣峰嚌鍦燂紝杩欑棰樺氨鏄姹浣撶Н鐨锛屾垜浠彧瑕佺畻浣撶Н灏卞ソ浜嗐傚渾鏌鐩村緞0.9绫筹紝鍗婂緞灏辨槸0.45绫筹紝楂樻槸5绫炽傚渾鏌浣撶Н鏄搴曢潰绉痻楂=锛埾0.45锛2锛墄5=3.14x0.45x0.45x5=3.17925绔嬫柟绫炽傛墍浠ュ彲浠ヨ3.17925绔嬫柟绫崇殑娣峰嚌鍦熴
