Difference between revisions of "2019 AMC 8 Problems/Problem 12"

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==Problem==
 
==Problem==
The faces of a cube are painted in six different colors: red (R), white (W), green (G), brown (B), aqua (A), and purple (P). Three views of the cube are shown below. What is the color of the face opposite the aqua face?
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The faces of a cube are painted in six different colors: red <math>(R)</math>, white <math>(W)</math>, green <math>(G)</math>, brown <math>(B)</math>, aqua <math>(A)</math>, and purple <math>(P)</math>. Three views of the cube are shown below. What is the color of the face opposite the aqua face?
  
 
[[File:2019AMC8Prob12.png]]
 
[[File:2019AMC8Prob12.png]]
<math>\textbf{(A) }Red\qquad\textbf{(B) }White\qquad\textbf{(C) }Green\qquad\textbf{(D) }Brown\qquad\textbf{(E) }Purple</math>
 
  
 
==Solution 1==
 
==Solution 1==
<math>B</math> is on the top, and <math>R</math> is on the side, and <math>G</math> is on the right side. That means that (image 2)<math>W</math> is on the left side. From the third image, you know that <math>P</math> must be on the bottom since <math>G</math> is sideways. That leaves us with the back, so the back must be <math>A</math>. The front is opposite of the back, so the answer is <math>\boxed{\textbf{(A)}\ R}</math>.~heeeeeeeheeeee
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<math>B</math> is on the top, and <math>R</math> is on the side, and <math>G</math> is on the right side. That means that (image <math>2</math>) <math>W</math> is on the left side. From the third image, you know that <math>P</math> must be on the bottom since <math>G</math> is sideways. That leaves us with the back, so the back must be <math>A</math>. The front is opposite of the back, so the answer is <math>\boxed{\textbf{(A)}\ R}</math>.~heeeeeeeheeeee
  
 
==Solution 2==
 
==Solution 2==
Looking closely we can see that all faces except for <math>A</math> are connected with <math>R</math>. Thus the answer is <math>\boxed{\textbf{(A)}\ R}</math>.
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Looking closely we can see that all faces are connected with <math>R</math> except for <math>A</math>. Thus the answer is <math>\boxed{\textbf{(A)}\ R}</math>.
  
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It is A, just draw it out!
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~phoenixfire
  
~phoenixfire
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==Solution 3==
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Associated video - https://www.youtube.com/watch?v=K5vaX_EzjEM
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Video Solution- https://youtu.be/Lw8fSbX_8FU ( Also explains problems 11-20)
  
==Note==
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==See also==
 
{{AMC8 box|year=2019|num-b=11|num-a=13}}
 
{{AMC8 box|year=2019|num-b=11|num-a=13}}
 
Only two of the cubes are required to solve the problem.
 
Only two of the cubes are required to solve the problem.

Revision as of 13:23, 31 October 2020

Problem

The faces of a cube are painted in six different colors: red $(R)$, white $(W)$, green $(G)$, brown $(B)$, aqua $(A)$, and purple $(P)$. Three views of the cube are shown below. What is the color of the face opposite the aqua face?

2019AMC8Prob12.png

Solution 1

$B$ is on the top, and $R$ is on the side, and $G$ is on the right side. That means that (image $2$) $W$ is on the left side. From the third image, you know that $P$ must be on the bottom since $G$ is sideways. That leaves us with the back, so the back must be $A$. The front is opposite of the back, so the answer is $\boxed{\textbf{(A)}\ R}$.~heeeeeeeheeeee

Solution 2

Looking closely we can see that all faces are connected with $R$ except for $A$. Thus the answer is $\boxed{\textbf{(A)}\ R}$.

It is A, just draw it out! ~phoenixfire

Solution 3

Associated video - https://www.youtube.com/watch?v=K5vaX_EzjEM

Video Solution- https://youtu.be/Lw8fSbX_8FU ( Also explains problems 11-20)

See also

2019 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

Only two of the cubes are required to solve the problem.