Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Let A = {(x, y) ∈ R × R ∣ 2x 2 + 2y 2 − 2x − 2y = 1}
B = {(x, y) ∈ R × R ∣ 4x+ + 4y 2 − 16y + 7 = 0} and
C = {(x, y) ∈ R × R ∣ x 2 + y 2 − 4x − 2y + 5 ≤ r 2 }
Then the minimum value of |r| such that 
is equal to
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
S 3 : x 2 + y 2 − 4x − 2y + 5 − r 2 = 0
C 3 : (2, 1)
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