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# Triangle ABC and rectangle JKLM have equal areas. What is the perimete

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Math Expert
Joined: 02 Sep 2009
Posts: 58402
Triangle ABC and rectangle JKLM have equal areas. What is the perimete  [#permalink]

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19 Dec 2018, 00:35
00:00

Difficulty:

15% (low)

Question Stats:

90% (01:32) correct 10% (00:57) wrong based on 23 sessions

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Triangle ABC and rectangle JKLM have equal areas. What is the perimeter of rectangle JKLM?

A. 10
B. 15
C. 20
D. 25
E. 30

Attachment:

Capture (3).JPG [ 20.51 KiB | Viewed 323 times ]

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Joined: 31 Oct 2013
Posts: 1464
Concentration: Accounting, Finance
GPA: 3.68
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Re: Triangle ABC and rectangle JKLM have equal areas. What is the perimete  [#permalink]

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19 Dec 2018, 00:40
Bunuel wrote:

Triangle ABC and rectangle JKLM have equal areas. What is the perimeter of rectangle JKLM?

A. 10
B. 15
C. 20
D. 25
E. 30

Attachment:
Capture (3).JPG

Height of the triangle:

$$a^2 +b^2 =c^2$$

$$12^2 + b^2 =15^2$$

$$b^2 = 81$$

b = 9.

Perimeter of the rectangle :

(6+9)2 = 30.

Re: Triangle ABC and rectangle JKLM have equal areas. What is the perimete   [#permalink] 19 Dec 2018, 00:40
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