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The figure above represents a rectangular plot of land that is to be d

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The figure above represents a rectangular plot of land that is to be d  [#permalink]

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New post 11 Sep 2018, 02:36
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37% (01:07) correct 63% (01:03) wrong based on 27 sessions

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The figure above represents a rectangular plot of land that is to be divided diagonally between two farmers with a fence. If the fence is to go from one corner to a corner diagonal, how long is the fence going to be?

(1) The area of the entire plot of land is 563 square meters.
(2) The square of the sum of the length and width of the plot is 2890.


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Re: The figure above represents a rectangular plot of land that is to be d  [#permalink]

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New post 11 Sep 2018, 05:24
Bunuel wrote:
Image
The figure above represents a rectangular plot of land that is to be divided diagonally between two farmers with a fence. If the fence is to go from one corner to a corner diagonal, how long is the fence going to be?

(1) The area of the entire plot of land is 563 square meters.
(2) The square of the sum of the length and width of the plot is 2890.


Attachment:
image008.jpg


Question : Length of Fence =Diagonal fo the rectangle \(= √(l^2+b^2) = ?\)

Statement 1:The area of the entire plot of land is 563 square meters.
i.e. l*b = 563
NOT SUFFICIENT

Statement 2:The square of the sum of the length and width of the plot is 2890.
i.e. \((l^2+b^2) = 2890\)
i.e. Diagonal \(= √2890\)
SUFFICIENT

Answer: Option B
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Re: The figure above represents a rectangular plot of land that is to be d  [#permalink]

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New post 30 Sep 2018, 02:25
Let x be the length and y be the breadthof the rectgangle. Asked = x+y+sqrt(x^2+y^2)
1. xy = 563 . Not sufficient
2. x^2+y^2 = 2890 or sqrt(x^+y^2) =sqrt(2890)

1+2------> multiply 1 by 2 we get, 2xy = 563*2
Add this to 2
we get x^2 + y^2 + 2xy = 2890 + 1126
or (x+y)^2 = smthng
or x+y = sqrt (some real no )= some real no
Thus, combination is sufficient
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Re: The figure above represents a rectangular plot of land that is to be d &nbs [#permalink] 30 Sep 2018, 02:25
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