document.write( "Question 389532: I am having trouble with this problem on this take home test that is due soon. The problem is: Two triangles are similar. The lengths of the sides of the smaller triangle are 4, 6, 7. The longest side of the larger triangle is 21. What is the perimeter of the larger triangle?\r
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document.write( "I know the perimeter of the smaller triangle is 17. But how does that help me find out the perimeter of the larger triangle when the only information I have is that they are similar and its largest side is 21? This question is multiple choice and I know I can cross out answer 1) 17 and answer 2)18. The last two answers are 42 and 51 and I just don't understand how it would be either. Can you please help!? \n" );
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Algebra.Com's Answer #276035 by mananth(16946)![]() ![]() You can put this solution on YOUR website! Two triangles are similar. The lengths of the sides of the smaller triangle are 4, 6, 7. The longest side of the larger triangle is 21. What is the perimeter of the larger triangle?\r \n" ); document.write( "\n" ); document.write( "Since the triangles are congruent \n" ); document.write( "the coressponding sides are congruent. \n" ); document.write( "... \n" ); document.write( "Largest side of larger triangle = 21. \n" ); document.write( "this is 3 times the largest side of the smaller triangle. \n" ); document.write( ".. \n" ); document.write( "The sides of the larger triangle \n" ); document.write( "4*3 = 12 \n" ); document.write( "6*3=18 \n" ); document.write( "7*3=21 \n" ); document.write( "Total 51 the perimeter \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " \n" ); document.write( " |