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05 Oct 2018, 00:48
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
58% (02:20) correct
42%
(02:28)
wrong
based on 118
sessions
History
Date
Time
Result
Not Attempted Yet
A circular mat with diameter 20 inches is placed on a square tabletop, having its sides equal to 24 inches. Which of the following is closest to the fraction of the tabletop NOT covered by the mat?
(A) 1/2
(B) 3/5
(C) 2/3
(D) 1/4
(E) 9/20
(A) 1/2
(B) 3/5
(C) 2/3
(D) 1/4
(E) 9/20
saurabh9gupta
Joined: 10 Jan 2013
Last visit: 28 Jul 2023
Posts: 251
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Given Kudos: 201
Location: India
Concentration: General Management, Strategy
Schools: Kenan-Flagler '24 (D)
GRE 1: Q163 V155
GPA: 3.95
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05 Oct 2018, 01:09
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My approach..
Area of circle is 100pi approx 314.
Area of square is 576
Fraction= (576-314)/576
262/576
50% of 576 is 288..
It has to be slightly less than 50% so E
Posted from my mobile device
Area of circle is 100pi approx 314.
Area of square is 576
Fraction= (576-314)/576
262/576
50% of 576 is 288..
It has to be slightly less than 50% so E
Posted from my mobile device
05 Oct 2018, 03:52
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Given radius=10 & Side=24
Area of circle=πr^2=3.14*10^2=314
Area of square=(Side)^2=24^2= 576
Required Fraction= Area not covered by circle/Total area of square=(576-314)/576=262/576 =131/288 =slightly less than 1/2
Since,9/20=0.45 closed of all choices,answer should be E.
Area of circle=πr^2=3.14*10^2=314
Area of square=(Side)^2=24^2= 576
Required Fraction= Area not covered by circle/Total area of square=(576-314)/576=262/576 =131/288 =slightly less than 1/2
Since,9/20=0.45 closed of all choices,answer should be E.
