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CGP EDU Academic Team
Published on: August 13, 2026
Let G be a circle of radius R > 0. Let G 1 ,G 2 , ..., G n be n circles of equal radius r > 0. Suppose each of the n circles G 1 , G 2 , ..., G n touches the circle G externally. Also, for i = 1, 2, ..., n - 1, the circle G i touches G i+1 externally, and G n touches G 1 externally. Then, which of the following statements is/are TRUE?
A
If n = 4, then ( 
-1) r<R
-1) r<R
B
If n = 5, then r < R
C
If n = 8, then ( 
-1)r<R
-1)r<R
D
If n = 12, then 
( 
+1)r > R .
( +1)r > R .
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(c,d)
For n=4, 
For n=8, 
For n=5, 
For n=12, 
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