Difference between revisions of "2007 AMC 8 Problems/Problem 12"

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if the equalateral triangles are squased into the hexagon, it would fit perfectly! so the answer is '''1:1 or A'''
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==Problem==
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A unit hexagram is composed of a regular hexagon of side length <math>1</math> and its <math>6</math>
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equilateral triangular extensions, as shown in the diagram. What is the ratio of
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the area of the extensions to the area of the original hexagon?
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<center>[[Image:AMC8_2007_12.png]]</center>
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<math>\mathrm{(A)}\ 1:1 \qquad \mathrm{(B)}\ 6:5  \qquad \mathrm{(C)}\ 3:2 \qquad \mathrm{(D)}\ 2:1 \qquad \mathrm{(E)}\ 3:1</math>
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==Solution==
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The six equilateral triangular extensions fit perfectly into the hexagon meaning the answer is <math>\boxed{\textbf{(A) }1:1}</math>
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==See Also==
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{{AMC8 box|year=2007|num-b=11|num-a=13}}

Revision as of 22:41, 12 November 2012

Problem

A unit hexagram is composed of a regular hexagon of side length $1$ and its $6$ equilateral triangular extensions, as shown in the diagram. What is the ratio of the area of the extensions to the area of the original hexagon?

AMC8 2007 12.png

$\mathrm{(A)}\ 1:1 \qquad \mathrm{(B)}\ 6:5  \qquad \mathrm{(C)}\ 3:2 \qquad \mathrm{(D)}\ 2:1 \qquad \mathrm{(E)}\ 3:1$

Solution

The six equilateral triangular extensions fit perfectly into the hexagon meaning the answer is $\boxed{\textbf{(A) }1:1}$

See Also

2007 AMC 8 (ProblemsAnswer KeyResources)
Preceded by
Problem 11
Followed by
Problem 13
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
All AJHSME/AMC 8 Problems and Solutions