Help
Contact
For teachers and institutes
Search courses, problems, tests…
A
A
>_
StemPy Lab
Courses ▾
Problems ▾
Practice ▾
Mock Tests
Classes
Community ▾
A
A
A square reserve with a side of 20 km is divided by… | StemPy Lab
Quizzes
/
A square reserve with a side of 20 km is divided by roads into four equal squares. In each square, the outer 1 km has lost its forest conditions. What per cent of the reserve is still core?
Biology
Medium
High School (11–12)
Ecology and Environment › Biodiversity and Conservation
AP
A-Level
IB
AP EAPCET
BCECE
CUET UG
+11 more exams
GUJCET
JCECE
JKCET
KCET
KIITEE
LPUNEST
MHT-CET
OJEE
SRMJEEE
TS EAPCET
VITEEE
Created by
StemPy Lab
A square reserve with a side of
20
km
20\ \text{km}
20
km
is divided by roads into four equal squares. In each square, the outer
1
km
1\ \text{km}
1
km
has lost its forest conditions. What per cent of the reserve is still core?
100
100
100
90
90
90
81
81
81
64
64
64
Check Answer
Log in to save
Tag someone
⚑ Report
← All Quizzes
← The Amazon rain forest is being cleared for
A study gives the value of the services of nature as 45 trillion US dollars a year, and the global product as 30 trillion US dollars a year. How many times is the value of the services the global product? →
More on
Ecology and Environment › Biodiversity and Conservation
Discussion (0)
Log in
to join the discussion.
Loading…
All questions on this topic →
Problems on this topic
A student wrote seven statements in a revision list…
Hard
The Earth Summit was held at Rio de Janeiro in 1992…
Easy
NCERT gives India 14 biosphere reserves, 90 national parks and 448 wildlife sanctuaries…
Easy
A seed bank holds a sample that is 98 per cent viable when stored…
Hard
All problems on this topic →