一个圆柱形水池水池内壁和底面都要镶上瓷砖水池底面直径6米池深1.2米镶瓷砖的面积最多是多少平方米
\u4e00\u4e2a\u5706\u67f1\u5f62\u6c34\u6c60,\u6c34\u6c60\u5185\u58c1\u548c\u5e95\u9762\u90fd\u8981\u9576\u4e0a\u74f7\u7816,\u6c34\u6c60\u5e95\u9762\u76f4\u5f846\u7c73,\u6c60\u6df11.2\u7c73,\u9576\u74f7\u7816\u7684\u9762\u79ef\u662f\u591a\u5c11\u5e73\u65b9\u7c73?6/2 =3
(3^2)*3.14=28.26
6*3.14*1.2=22.608
28.26+22.608=50.868
\u7b54\uff1a\u9576\u74f7\u7816\u7684\u9762\u79ef\u662f50.868\u5e73\u65b9\u7c73.
\u4f60\u597d\uff1b
\u5e95\u9762\u79ef=3.14\u00d7\uff086\u00f72\uff09²=28.26\uff08\u5e73\u65b9\u7c73\uff09
\u4fa7\u9762\u79ef=3.14\u00d76\u00d71.2=22.608\uff08\u5e73\u65b9\u7c73\uff09
\u9576\u74f7\u7816\u7684\u9762\u79ef=22.608+28.26=50.868\uff08\u5e73\u65b9\u7c73\uff09
面积=3×3×3.14+6×3.14×1.2=50.868平方米
底面周长6π，侧面积=6π×1.2=7.2π
底面积(6÷2)^2π=9π，
共面积=16.2π≈51平方米。
应该是底面+侧面
底面=πr²=π（6/2）²=9π
侧面=底面周长*深度=πd*h=π*6*1.2=7.2π
9π+7.2π=16.2*3.14=50.868平方米
绛旓細姹犲簳闈㈢Н锛3.14*9 鍐呭闈㈢Н锛3.14*6*1.2 鍔犺捣鏉ユ槸50.868骞虫柟绫
绛旓細瑙,渚濋鎰忎篃灏辨槸姹傚渾鏌变晶闈㈢Н涓庡簳闈㈢Н鐨勫拰 搴曢潰绉负S搴=蟺脳2²=4蟺 m²渚ч潰绉负S渚=蟺脳4脳1.5=6蟺 m²鍒欏渾鏌变晶闈㈢Н涓庡簳闈㈢Н鐨勫拰涓 4蟺+6蟺=10蟺 m²绛 涓涓渾鏌卞舰姘存睜,姹犲唴澹佸拰搴曢潰閮瑕侀暥涓婄摲鐮,姘存睜鐨勫簳闈㈢洿寰勬槸4m,姹犲唴娣1.5m,闀剁摲鐮栫殑闈㈢Н鏄10蟺骞虫柟...
绛旓細姹搴曢潰绉細3.14脳3^2=28.26骞虫柟绫 姹犲闈㈢Н锛3.14脳6脳1.5=28.26骞虫柟绫 鎶规按娉ラ潰绉28.26+28.26=56.52骞虫柟绫 闇姘达細28.26脳1.2=33.912绔嬫柟绫
绛旓細鍗婂緞=4绫 楂=1.2绫 闀剁摲鐮栫殑闈㈢Н =搴曢潰绉+渚ч潰绉 =3.14脳4脳4+2脳3.14脳4脳1.2 =80.384骞虫柟绫 ~涓鍒绘案杩523涓轰綘瑙ｇ瓟锛岀浣犲涔犺繘姝~~濡傛灉浣犺鍙垜鐨勫洖绛旓紝璇峰強鏃剁偣鍑汇愰噰绾充负婊℃剰鍥炵瓟銆戞寜閽畘~鎵嬫満鎻愰棶鑰呭湪瀹㈡埛绔笂璇勪环鐐光滄弧鎰忊濆嵆鍙瘇~~浣犵殑閲囩撼鏄垜鍓嶈繘鐨勫姩鍔泘~~濡傝繕鏈夋柊鐨勯棶棰...
绛旓細5.5*5.5*3.14+5.5*2*3.14*1.8 =94.985+62.172 =157.157骞虫柟绫
绛旓細闈㈢Н涓3.14*2*2*1.5=18.84骞虫柟绫炽傛湜閲囩撼
绛旓細姹犵殑搴曢潰绉=3.14脳锛6/2锛塣2 =3.14脳9 =28.26锛堝钩鏂圭背锛夋睜鐨勪晶闈㈢Н=3.14脳6脳1.2 =22.608锛堝钩鏂圭背锛夐暥鐡风爾鐨勯潰绉=28.26+22.608 =50.868锛堝钩鏂圭背锛夋湁甯姪璇风偣濂借瘎鎴栬呴噰绾 绁濅綘鏂扮殑涓瀛︽湡瀛︿範杩涙锛
绛旓細鎬荤殑闈㈢Н涓50.868骞虫柟銆
绛旓細6鍒嗙背=0.6绫 0.6梅2=0.3绫 0.3脳0.3=0.09骞虫柟绫 杩欎釜鍦嗘煴鐨勫簳闈㈢Н锛3.14脳0.09=0.2826骞虫柟绫 杩欎釜鍦嗘煴鐨勪晶闈㈢Н锛3.14脳0.6脳1.2=2.2608骞虫柟绫 2.2608+0.2826=2.5434骞虫柟绫 闀剁摲鐮栫殑闈㈢Н鏈澶氭槸2.5434骞虫柟绫
绛旓細6脳3.14脳1.2+锛6梅2锛²脳3.14 =22.608+28.26 =50.868锛堛帯锛夌瓟:璐寸摲鐮栫殑闈㈢Н鏄50.868銕°
