多边形面积5年级

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多边形面积5年级

来源：baiyundou.net 日期：2024-08-22

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晁都世5024五年级多边形的面积 -
文转承18291575043 ______ 设长方形的宽是x厘米,则根据题意知道长方形的长是3x厘米(这样把长等分成3份,长度都是x厘米,符合题意),则长方形的周长公式为2*(x+3x)=72,得x=9.长方形的长为3x=27厘米,宽为x=9厘米,正方形的边长为9厘米,正方形的周长为4*9=36厘米,面积为9*9=81平方厘米

晁都世5024小学五年级数学多边形的面积请详细解答,谢谢! (2 11:24:21) -
文转承18291575043 ______ S(EFG)=1/2S(DFG),所以S(DFG)=8*2=16平方米, S(DFG)=1/2 DG*FP (P是F向DB的垂足) =1/2(2/3DB)*(2/3CQ) (Q是C向DB的垂足) =4/9(1/2DB*CQ) =4/9S(CDB) =2/9S(平行四边形ABCD) 即S(平行四边形ABCD)=9/2S(DFG)=9/2*16=72平方米

晁都世5024小学数学五年级上册之多边形面积练习15第8大题的解答一个大的平行四边的面积是48CM2.A,B是上,下两边的中点.你能求出图中小平行四边形(阴隐部分)... -
文转承18291575043 ______[答案] 小平行四边形的底边长等于大平行四边形的底边长的一半, 小平行四边形的高等于大平行四边形的高所以小平行四边形的面积等于大平行四边形的面积的一半即48/2=24平方厘米

晁都世5024五年级数学上册第5单元测试题【多边形的面积】 -
文转承18291575043 ______ 一、填空:18分 1、4.08 m2=(408)dm2 6200平方米=(0.62)公顷 90平方厘米=(0.009)平方米 4.3公顷=(43000)平方米 5平方米8平方分米=(5.08)平方米=(508)平方分米 2、平行四边形的面积是48平方分米,底是12分米,高是(4...

晁都世5024益智园,小学五年级多边形的面积 -
文转承18291575043 ______ C ,设正方形边长为1.三角形的底都为1/2,两个三角形的面积和1/2*0.5*高+1/2*0.5*高=1/2*0.5*(两个高之和=正方形边长)=1/4,所以阴影面积占正方形1/4

晁都世5024五年级数学第六单元多边形的面积怎样说 -
文转承18291575043 ______ badu知道 http://zhidao.baidu.com/search?word=%E5%A4%9A%E8%BE%B9%E5%BD%A2%E7%9A%84%E9%9D%A2%E7%A7%AF&tn=ikaslist&ct=17&ie=utf-8&sc=hao123&rn=20&f=3&rsp=0

晁都世5024五年级上册多边形面积数学试卷 -
文转承18291575043 ______[答案] 你自己上课认真点听下课了不会的就问老师不耻下问对题型要掌握考试的时候再认真些就可以了我差不多就这样获得了好成绩

晁都世5024小学五年级数学多边形的面积请详细解答,谢谢! (2 11:24:21)有一块平行四边形菜地,DE=EF=FC,GB=1/3BD,三角形GEF中的是小白菜,面积是8... -
文转承18291575043 ______[答案] S(EFG)=1/2S(DFG),所以S(DFG)=8*2=16平方米, S(DFG)=1/2 DG*FP (P是F向DB的垂足) =1/2(2/3DB)*(2/3CQ) (Q是C向DB的垂足) =4/9(1/2DB*CQ) =4/9S(CDB) =2/9S(平行四边形ABCD) 即S(平行四边形ABCD)=9/2S(DFG)=9/2*16=72...

晁都世5024人教版五年级上册数学多边形面积攻略 -
文转承18291575043 ______ 正方形:边乘边长方形:长乘宽三角形:底乘高除以二平行四边形:底乘高梯形:(上底加下底)乘以高除以二

晁都世5024Y5《数学报》——多边形的面积整理和复习(一)上的“智慧小博士”实验小学五年级同学在进行广播操表演时,围成了一个直角三角形,已知每条边上的... -
文转承18291575043 ______[答案] (16x2)x(21x2)

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