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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
On the xy-plane, what is the perimeter of a triangle with ve
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29 Mar 2020, 08:35
29 Mar 2020, 08:35
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On the xy-plane, what is the perimeter of a triangle with vertices at points A(-1,-3), B(3,2), and C(3,-3)?
(A) 12
(B) \(10 + 2\sqrt{3}\)
(C) \(7 + 5\sqrt{2}\)
(D) 15
(E) \(9 + \sqrt{41}\)
(A) 12
(B) \(10 + 2\sqrt{3}\)
(C) \(7 + 5\sqrt{2}\)
(D) 15
(E) \(9 + \sqrt{41}\)
Re: On the xy-plane, what is the perimeter of a triangle with ve
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29 Mar 2020, 22:15
29 Mar 2020, 22:15
2
On drawing the triangle on xy plane, we can see that, base of the triangle is 4, height is 5. Since it is a 30-60-90 triangle, we can use pythagoras theorem and find out the hypotenuse of the triangle, which is sqrt41.
Thus, on adding all the terms, we get 9+sqrt41, which is option E.
Thus, on adding all the terms, we get 9+sqrt41, which is option E.
gmatclubot
Re: On the xy-plane, what is the perimeter of a triangle with ve [#permalink]
29 Mar 2020, 22:15
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