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25 Jul 2022, 01:31
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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:
55%
(hard)
Question Stats:
54% (01:59) correct
46%
(01:19)
wrong
based on 35
sessions
History
Date
Time
Result
Not Attempted Yet
How many non-overlapping circles with circumference 4 can be drawn in a square with side 12?
A. 81
B. 36
C. 12
D. 9
E. 3
Are You Up For the Challenge: 700 Level Questions
A. 81
B. 36
C. 12
D. 9
E. 3
Are You Up For the Challenge: 700 Level Questions
25 Jul 2022, 03:39
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Diameter of a circle with circumference 4:
\(2πr = 4\)
\(2r = \frac{4}{π}\)
How many circles can fit in a row when the length is 12:
\(\frac{12}{\frac{4}{π}}\)
\(= 12 * \frac{π}{4} \)
\(= 3π\)
\(≈ 9\)
As 9 can fit in a row and we are dealing with a square, the amount of circles that can fit into the square is: \(9*9 = 81\)
Answer A
\(2πr = 4\)
\(2r = \frac{4}{π}\)
How many circles can fit in a row when the length is 12:
\(\frac{12}{\frac{4}{π}}\)
\(= 12 * \frac{π}{4} \)
\(= 3π\)
\(≈ 9\)
As 9 can fit in a row and we are dealing with a square, the amount of circles that can fit into the square is: \(9*9 = 81\)
Answer A
25 Jul 2022, 18:22
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Bunuel
92
Answer choice F: none of the above.
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