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Which of the following rectangles, not necessarily drawn to scale, has

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Math Expert
Joined: 02 Sep 2009
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Which of the following rectangles, not necessarily drawn to scale, has [#permalink]

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16 Nov 2017, 01:43
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Which of the following rectangles, not necessarily drawn to scale, has an area equal to that of a circle of radius r?

[Reveal] Spoiler:
Attachment:

2017-11-16_1236_001.png [ 9.48 KiB | Viewed 614 times ]
[Reveal] Spoiler: OA

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Re: Which of the following rectangles, not necessarily drawn to scale, has [#permalink]

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16 Nov 2017, 05:39
Bunuel wrote:
Which of the following rectangles, not necessarily drawn to scale, has an area equal to that of a circle of radius r?

[Reveal] Spoiler:
Attachment:
2017-11-16_1236_001.png

HI Bunuel,

Is it Area of rectangle = area of circle or

Area of rectangle = radius of circle?
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Posts: 44321
Re: Which of the following rectangles, not necessarily drawn to scale, has [#permalink]

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16 Nov 2017, 05:43
NandishSS wrote:
Bunuel wrote:
Which of the following rectangles, not necessarily drawn to scale, has an area equal to that of a circle of radius r?

[Reveal] Spoiler:
Attachment:
2017-11-16_1236_001.png

HI Bunuel,

Is it Area of rectangle = area of circle or

Area of rectangle = radius of circle?

Which of the following rectangles has an area equal to that of (to the area of) a circle of radius r?
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Senior Manager
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Re: Which of the following rectangles, not necessarily drawn to scale, has [#permalink]

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16 Nov 2017, 05:46
Area of rectangles =l*b

Area of circle = (pi) r^2

Hence A
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Re: Which of the following rectangles, not necessarily drawn to scale, has [#permalink]

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16 Nov 2017, 09:39
Bunuel wrote:
Which of the following rectangles, not necessarily drawn to scale, has an area equal to that of a circle of radius r?

[Reveal] Spoiler:
Attachment:
2017-11-16_1236_001.png

Area of circle = $$πr^2$$

Among the given options, area of the rectangle is $$πr^2$$, so answer will be (A)
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Re: Which of the following rectangles, not necessarily drawn to scale, has [#permalink]

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17 Nov 2017, 14:30
Bunuel wrote:
Which of the following rectangles, not necessarily drawn to scale, has an area equal to that of a circle of radius r?

[Reveal] Spoiler:
Attachment:
2017-11-16_1236_001.png

The area of a circle with radius r is πr^2. Let’s look at the area of the rectangle in each answer choice:

A) Area = πr x r = πr^2

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Re: Which of the following rectangles, not necessarily drawn to scale, has   [#permalink] 17 Nov 2017, 14:30
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