题目
一个直径为8m的半圆形花坛,它的周长是______m,面积是______m2.
提问时间:2020-10-22
答案
已知d=8米,
半圆形的周长=3.14×8÷2+8,
=12.56+8,
=20.56(米);
8÷2=4(米),
半圆形的面积=3.14×42÷2,
=3.14×16÷2,
=25.12(平方米);
答:这个半圆形的周长是20.56米,面积是25.12平方米.
故填:20.56,25.12.
半圆形的周长=3.14×8÷2+8,
=12.56+8,
=20.56(米);
8÷2=4(米),
半圆形的面积=3.14×42÷2,
=3.14×16÷2,
=25.12(平方米);
答:这个半圆形的周长是20.56米,面积是25.12平方米.
故填:20.56,25.12.
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
1,人们染上烟瘾,最终因吸烟使自己丧命.
最新试题
- 113的开方约等余多少?
- 2连词成句 has ,he,of,always,learn,lots,things,to,new.
- 3Some people feel sick in the winter.Many people get the flu.How do you know when you have the flu?DO
- 4yes.he work very hard and stays healthy是什么意思
- 5为什么干涉亮条纹是差一个波长 但是衍射差一个波长却是暗条纹?
- 6The journey of making the Cross Country team was precious but also a challenge for me.
- 7电流的意思是~~电荷的定向移动产生电流~~
- 8反比例函数y=2/x,y=4/x,y=6/x的图像具有的共同特征:1 .
- 9My English teacher is very funny. He has really long hair and wears an earring in one ear. He likes
- 10英语翻译
热门考点