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What is the perimeter of the triangle shown in the circle above with c

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What is the perimeter of the triangle shown in the circle above with c  [#permalink]

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New post 04 Sep 2018, 23:48
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  25% (medium)

Question Stats:

93% (00:23) correct 7% (00:25) wrong based on 14 sessions

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What is the perimeter of the triangle shown in the circle above with center O?

(1) The area of the circle is 25π
(2) The triangle shown is isosceles


Attachment:
image005.jpg
image005.jpg [ 2.82 KiB | Viewed 120 times ]

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What is the perimeter of the triangle shown in the circle above with c  [#permalink]

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New post 05 Sep 2018, 00:07
Bunuel wrote:
Image
What is the perimeter of the triangle shown in the circle above with center O?

(1) The area of the circle is 25π
(2) The triangle shown is isosceles


Attachment:
image005.jpg


(1) The area of the circle is 25π
b*h/2 = \(25\pi\)
r^2/2= \(25\pi\)
r=5\(\sqrt{2}\)
let the third side be a
using pythagoras
a^2=r^2 + r^2
this will give us a
followed by perimeter
sufficient

(2) The triangle shown is isosceles
we already know that
insufficient

A
What is the perimeter of the triangle shown in the circle above with c &nbs [#permalink] 05 Sep 2018, 00:07
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