一个用水泥抹成的蓄水池如下图。水池底面的厚度与壁的厚度相同。 高2.25M 底面直径4.5M 厚度25CM ，建 一个储水池如右图，水池底的厚度与壁的厚度相同（厚度50CM，...
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\u6700\u591a\u76db\u6c34\uff1a2²\u00d73.14\u00d72.25=28.26\uff08\u7c73³\uff09
(1)\u6c34\u6c60\u6df1\u5ea6=2.5-0.5=2\uff08\u7c73\uff09\uff1b \u5e95\u9762\u5185\u76f4\u5f84=4-0.5-0.5=3\uff08\u7c73\uff09\uff1b \u5e95\u9762\u5185\u534a\u5f84=3/2=1.5\uff08\u7c73\uff09\uff1b\u5e95\u9762\u9762\u79ef=1.5*1.5*pi\uff08\u5706\u5468\u7387\uff0c\u6253\u4e0d\u51fa\u6765\uff09=7.065\uff08\u5e73\u65b9\u7c73\uff09\uff1b\u5bb9\u79ef=7.065*2=14.1\uff08\u7acb\u65b9\u7c73\uff09\u3002
\uff082\uff09\u4fef\u89c6\u56fe\u9762\u79ef2*2*pi-1.5*1.5*pi=5.495\uff08\u5e73\u65b9\u7c73\uff09\uff1b\u4e0a\u534a\u90e8\u5206\u4f53\u79ef=5.495*2=10.99\uff08\u7acb\u65b9\u7c73\uff09\uff1b\u5e95\u9762\u79ef=2*2*pi=12.56\uff08\u5e73\u65b9\u7c73\uff09\uff1b\u4e0b\u534a\u90e8\u5206\u4f53\u79ef=12.56*0.5=6.28\uff08\u7acb\u65b9\u7c73\uff09\uff1b\u603b\u4f53\u79ef\uff08\u5373\u7528\u6599\uff09=6.28+10.99=17.27\uff08\u7acb\u65b9\u7c73\uff09\u3002
\uff083\uff09\u5e95\u9762\u5468\u957f=3*pi=9.42\uff08\u7c73\uff09\uff1b\u4fa7\u9762\u79ef=9.42*2=18.84\uff08\u5e73\u65b9\u7c73\uff09\uff1b\u603b\u9762\u79ef=18.84+7.065=25.905\uff08\u5e73\u65b9\u7c73\uff09\u3002
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第二，注意单位名称的统一
4.5m=450cm 2.25m=225cm
小圆半径=450/2 - 25 =200cm 大圆半径=450/2 =225cm
底面积= （225*225-200*200）*π=33362.5 平方厘米
体积= 33362.5*225=7506562.5 立方厘米 =7.5065625 立方米
绛旓細浣撶Н= 33362.5*225=7506562.5 绔嬫柟鍘樼背 =7.5065625 绔嬫柟绫
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绛旓細棣栧厛闇瑕佽绠楀嚭钃勬按姹犵殑鎬昏〃闈㈢Н锛岀劧鍚庡啀鍑忓幓姹犲簳鐨勯潰绉紝寰楀埌闇瑕鎶涓婃按娉ョ（姘存偿鐨閮ㄥ垎闈㈢Н銆傛睜瀛愮殑鎬昏〃闈㈢Н = 搴曢潰绉 + 4涓晶闈㈢Н 搴曢潰绉 = 闀 脳 瀹 = 10m 脳 8m = 80骞虫柟绫 渚ч潰绉 = 楂 脳 鍛ㄩ暱 = 3m 脳 (10m + 8m) = 54骞虫柟绫 姹犲瓙鐨勬昏〃闈㈢Н = 搴曢潰绉 + 4涓晶闈㈢Н = 80...
绛旓細鍏蜂綋杩囩▼濡傚浘鎵绀猴紝璇峰拷鐣ュ瓧浣撻毦鐪
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绛旓細鎶规按娉ョ殑闈㈢Н灏辨槸琛ㄩ潰绉 8脳6.8+8脳2.5脳2+2.5脳6.8脳2=128.4(骞虫柟绫筹級8脳6.8脳2.5=136锛堢珛鏂圭背锛=136锛堝惃锛
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绛旓細绛旓細涓鍏辫鐢ㄦ按娉3014.4鍗冨厠銆傝В鏋愯繃绋嬶細1銆佸渾鏌卞舰鐨勮搫姘存睜鍥涘懆鍙婂簳閮鎶规按娉姹傚緱鏄〃闈㈢Н銆傚嵆渚ч潰绉拰搴曢潰绉箣鍜 2銆佸凡鐭ュ簳闈㈠懆闀挎槸25.12绫筹紝鏍规嵁鍏紡C搴曢潰鍛ㄩ暱锛澫d锛2蟺r锛屽彲鐭ュ渾鏌卞舰钃勬按姹犵殑鍗婂緞 r=25.12梅3.14梅2=4绫 3銆佸渾鏌辩殑渚ч潰绉=搴曢潰鍛ㄩ暱x楂=2蟺rh=25.12x4=100.48 4銆佸簳...
