公园里有一个长方形的花坛,长100米,宽80米,花坛周围有一条5米宽的绿化带，这条绿化带面积是多少 有一个长方形花坛，长100米，宽80米。花坛周围有一条5米宽...
\u516c\u56ed\u91cc\u6709\u4e00\u4e2a\u957f\u65b9\u5f62\u7684\u82b1\u575b\uff0c\u957f\u662f100\u7c73\uff0c\u5bbd\u662f80\u7c73\uff0c\u82b1\u575b\u5468\u56f4\u6709\u4e00\u67615\u7c73\u5bbd\u7684\u8349\u576a\u7eff\u5316\u5e26\uff0c\u8fd9\u6761\u8349\u576a\u7eff\u5316\u8fd9\u9898\u76ee\u5176\u5b9e\u753b\u4e2a\u56fe\u7247\u4f1a\u66f4\u52a0\u76f4\u89c2\uff0c\u662f\u5178\u578b\u5927\u51cf\u5c0f\u7684\u9898\u76ee\u3002
\u5305\u542b\u82b1\u575b\u4e0e\u7eff\u5316\u5e26\u4e3a\u5927\u957f\u65b9\u5f62
\u5927\u957f\u65b9\u5f62\u7684\u957f=\u82b1\u575b\u7684\u957f+\u7eff\u5316\u5e26\u7684\u5bbd\u5ea6 x 2 = 100+5 x 2 = 110
\u5927\u957f\u65b9\u5f62\u7684\u5bbd=\u82b1\u575b\u7684\u5bbd+\u7eff\u5316\u5e26\u7684\u5bbd\u5ea6 x 2 = 80+5 x 2 = 90
\u5927\u957f\u65b9\u5f62\u7684\u9762\u79ef = 110 x 90 = 9900
\u82b1\u575b\u7684\u9762\u79ef = 100 x 80 = 8000
\u6240\u4ee5\uff1a\u7eff\u5316\u5e26\u7684\u9762\u79ef = 9900 - 8000 = 1900
\u81ea\u5df1\u6ce8\u610f\u5355\u4f4d
\u6709\u4e00\u4e2a\u957f\u65b9\u5f62\u82b1\u575b\uff0c\u957f100\u7c73\uff0c\u5bbd80\u7c73\u3002\u82b1\u575b\u5468\u56f4\u6709\u4e00\u67615\u7c73\u5bbd\u8349\u576a\u7eff\u5316\u5e26\uff0c\u8fd9\u6761\u8349\u576a\u7eff\u5316\u5e26\u7684\u9762\u79ef\u662f\u591a\u5c11
\u89e3\uff1a\u6839\u636e\u9898\u610f\u5217\u5f0f\u4e3a\uff1a
\uff08100+5x2\uff09x\uff0880+5x2\uff09-100x80
=110x90-8000
=9900-8000
=1900\uff08\u5e73\u65b9\u7c73\uff09
\u7b54\uff1a\u9762\u79ef\u662f1900\u5e73\u65b9\u7c73\u3002
100╳80=800
0
绛旓細(100+5+5)*(80+5+5)-100*80=110*90-8000=9900-8000=1900
绛旓細锛100+5x2锛墄锛80+5x2锛-100x80=1900骞虫柟绫
绛旓細缁垮寲甯﹂潰绉=110*90-100*80=9900-8000=1900骞虫柟绫
绛旓細闀挎柟褰㈣姳鍧鐨勬爡鏍忓懆闀=2脳锛11+5锛=32锛堢背锛夛紝鎹㈡垚姝ｆ柟褰紝姣忚竟闀=32梅4=8锛堢背锛夈傚畠鐨勯潰绉=8脳8=64锛堢背²锛夈備緵鍙傝冨晩銆
绛旓細鏈変竴涓暱鏂瑰舰鑺卞潧锛岄暱100绫筹紝瀹80绫炽傝姳鍧涘懆鍥存湁涓鏉5绫冲鑽夊潽缁垮寲甯︼紝杩欐潯鑽夊潽缁垮寲甯︾殑闈㈢Н鏄灏 瑙ｏ細鏍规嵁棰樻剰鍒楀紡涓猴細锛100+5x2锛墄锛80+5x2锛-100x80 =110x90-8000 =9900-8000 =1900锛堝钩鏂圭背锛夌瓟锛氶潰绉槸1900骞虫柟绫炽
绛旓細杩炲皬璺湪鍐呯殑闀挎柟褰闈㈢Н鏄:锛16+1+1锛壝楋紙12+1+1锛=18脳14 =252骞虫柟绫 涓棿鑺卞潧鐨勯潰绉:16脳12=192骞虫柟绫 灏忚矾闈㈢Н鏄:252-192=60骞虫柟绫
绛旓細鍏洯閲屾湁涓涓暱鏂瑰舰鑺卞潧 鍦ㄥ畠鐨勫鍥翠慨涓涓鏄竴绫崇殑灏忚矾 灏忚矾鐨勯潰绉负浜屽崄鍥涘钩鏂圭背涓棿鑺卞潧鐨勯潰绉槸澶? 10 鎴戞潵绛 1涓洖绛 #鐑# 鑱屽満涓婂彈濮斿眻瑕佷笉瑕佷负鑷繁瑙ｉ噴?zwb鍚笢 2019-12-18 路 TA鑾峰緱瓒呰繃1.9涓囦釜璧 鐭ラ亾澶ф湁鍙负绛斾富 鍥炵瓟閲:1.7涓 閲囩撼鐜:85% 甯姪鐨勪汉:1327涓 鎴戜篃鍘荤瓟棰...
绛旓細闇瑕佺绗嗙殑闀垮害鏄 ((10+2脳2)+(6+2脳2))脳2=48 锛堢背锛
绛旓細鍒嗛厤寰嬨傛爡鏍忛暱锛氾紙14.5+5.8锛壝2=40.6m
绛旓細杩炲皬璺湪鍐呯殑闀挎柟褰㈤潰绉槸:锛16+1+1锛壝楋紙12+1+1锛=18脳14 =252骞虫柟绫 涓棿鑺卞潧鐨勯潰绉16脳12=192骞虫柟绫 灏忚矾闈㈢Н鏄 252-192=60骞虫柟绫 甯哥敤闈㈢Н鍛ㄩ暱鍏紡 1銆闀挎柟褰㈢殑鍛ㄩ暱=锛堥暱+瀹斤級脳2 C=(a+b)脳2 2銆佹鏂瑰舰鐨勫懆闀=杈归暱脳4 C=4a 3銆侀暱鏂瑰舰鐨勯潰绉=闀棵楀 S=ab 4銆佹鏂瑰舰鐨勯潰绉=...
