题楼上已翻译题目的意思我就直接解了.
如果不要方程的话：
森林+沙丘：2/5+1/4=13/20
那么剩下的就是农场：单位“1”-13/20=7/20
90公顷=“7/20”:90÷7/20=1800/7公顷（好怪哦、、)=257又1/7公顷
答：the total area od the land is 257 1/7 hectares
a small island has 2/5 of its surface covered by forest and
4个回答
相关问题
-
Nearly________ of the surface of our planet is covered by wa
-
In1850,about a third of the USA ( ) cover by forest
-
___ most of the earth’s surface is covered by water,fresh wa
-
21.____ most of the earth’s surface is covered by water,fres
-
When and by whom the small island was first settled is a mat
-
In 1620,about half of the USA___covered by forest A:are B:is
-
1.单选In 1850,about a third of U.S.A.______covered by forests.
-
There is a small village____ the forest and it is very beaut
-
英语翻译a small animal that is covered in fur and has a long thi
-
首字母填空The sea covers a great part of th Earth's surface .it i