Difference between revisions of "2017 AIME I Problems/Problem 15"

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The area of the smallest equilateral triangle with one vertex on each of the sides of the right triangle with side lengths <math>2\sqrt{3},~5,</math> and <math>\sqrt{37},</math> as shown, is <math>\frac{m\sqrt{p}}{n},</math> where <math>m,~n,</math> and <math>p</math> are positive integers, <math>m</math> and <math>n</math> are relatively prime, and <math>p</math> is not divisible by the square of any prime. Find <math>m+n+p.</math>
 
The area of the smallest equilateral triangle with one vertex on each of the sides of the right triangle with side lengths <math>2\sqrt{3},~5,</math> and <math>\sqrt{37},</math> as shown, is <math>\frac{m\sqrt{p}}{n},</math> where <math>m,~n,</math> and <math>p</math> are positive integers, <math>m</math> and <math>n</math> are relatively prime, and <math>p</math> is not divisible by the square of any prime. Find <math>m+n+p.</math>
 
<math>[asy]
 
size(5cm);
 
pair C=(0,0),B=(0,2*sqrt(3)),A=(5,0);
 
real t = .385, s = 3.5*t-1;
 
pair R = A*t+B*(1-t), P=B*s;
 
pair Q = dir(-60) * (R-P) + P;
 
fill(P--Q--R--cycle,gray);
 
draw(A--B--C--A^^P--Q--R--P);
 
dot(A--B--C--P--Q--R);
 
[/asy]</math>
 
  
 
==Solution==
 
==Solution==
  
 
==See Also==
 
==See Also==

Revision as of 16:56, 8 March 2017

Problem 15

The area of the smallest equilateral triangle with one vertex on each of the sides of the right triangle with side lengths $2\sqrt{3},~5,$ and $\sqrt{37},$ as shown, is $\frac{m\sqrt{p}}{n},$ where $m,~n,$ and $p$ are positive integers, $m$ and $n$ are relatively prime, and $p$ is not divisible by the square of any prime. Find $m+n+p.$

Solution

See Also