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A circular tub has a band painted around its circumference

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A circular tub has a band painted around its circumference [#permalink] New post 26 Aug 2012, 02:19
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92% (01:29) correct 8% (00:45) wrong based on 180 sessions
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TUB.png [ 14.01 KiB | Viewed 2477 times ]
A circular tub has a band painted around its circumference, as shown above. What is the surface area of this painted band?

(1) x = 0.5
(2) The height of the tub is 1 meter.

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Question: 30
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Difficulty: 600
[Reveal] Spoiler: OA

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Re: A circular tub has a band painted around its circumference [#permalink] New post 31 Aug 2012, 02:10
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SOLUTION:

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A circular tub has a band painted around its circumference, as shown above. What is the surface area of this painted band?

The surface area of the band is circumference of the band (circumference of the tub) multiplied by the width of the band.

(1) x = 0.5. We know the width of the band but not the circumference. Not sufficient.

(2) The height of the tub is 1 meter. From the height of the tub we cannot get neither the width of the band nor the circumference of the tub. Not sufficient.

(1)+(2) We still cannot get the circumference of the tub. Not sufficient.

Answer: E.
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COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

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Re: A circular tub has a band painted around its circumference [#permalink] New post 31 Aug 2012, 02:18
I don't think, this is 650 level. Seems pretty easy to me.

We even don't have to calculate anything here.
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Re: A circular tub has a band painted around its circumference [#permalink] New post 31 Aug 2012, 02:25
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Re: A circular tub has a band painted around its circumference [#permalink] New post 31 Aug 2012, 02:44
The answer is E since we don't know the radius of the tub.
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Re: A circular tub has a band painted around its circumference [#permalink] New post 30 Jun 2014, 09:18
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Re: A circular tub has a band painted around its circumference   [#permalink] 30 Jun 2014, 09:18
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