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If p is the circumference of the circle Q and the area of th
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21 Sep 2018, 09:52
21 Sep 2018, 09:52
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If p is the circumference of the circle Q and the area of the circle is 25 \(\pi\), what is the value of p ?
(A) 25
(B) 10 \(\pi\)
(C) 35
(D) 15 \(\pi\)
(E) 25 \(\pi\)
(A) 25
(B) 10 \(\pi\)
(C) 35
(D) 15 \(\pi\)
(E) 25 \(\pi\)
Re: If p is the circumference of the circle Q and the area of th
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25 Sep 2018, 19:40
25 Sep 2018, 19:40
1
circumference of a circle = \(2\pi*r\)
Area given = \(25\pi\)
or, \(\pi r^2 = 25 \pi\)
therefore, \(r = 5\)
p, which is the circumference = \(2*\pi*5 = 10\pi\)
Area given = \(25\pi\)
or, \(\pi r^2 = 25 \pi\)
therefore, \(r = 5\)
p, which is the circumference = \(2*\pi*5 = 10\pi\)
gmatclubot
Re: If p is the circumference of the circle Q and the area of th [#permalink]
25 Sep 2018, 19:40
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