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22 Oct 2019, 03:32
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
71% (00:55) correct
29%
(01:16)
wrong
based on 92
sessions
History
Date
Time
Result
Not Attempted Yet
If the area of a circle inscribed in a square is 49π, what is the perimeter of the square?
(A) 56
(B) 49
(C) 14π
(D) 28
(E) 14
(A) 56
(B) 49
(C) 14π
(D) 28
(E) 14
26 Oct 2019, 08:50
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Bunuel
Since area is 49π, the radius is 7, and the diameter is 14.
Since the diameter of the circle = a side of square, the perimeter of the square is 14 x 4 = 56.
Answer: A
General Discussion
22 Oct 2019, 03:43
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\(π*r^{2}\)=49π
\(r^{2}\)= 49
r=7
--> the side of the square will be 2r=14
The perimeter of the square is equal to 4*14=56
The answer is A.
\(r^{2}\)= 49
r=7
--> the side of the square will be 2r=14
The perimeter of the square is equal to 4*14=56
The answer is A.
