SOLUTION: a triangle has a perimeter of 42cm. Each of the two longer sides of the triangle are three times as long as the shortest side. What are the lengths of all three sides of the triang

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Question 1096752: a triangle has a perimeter of 42cm. Each of the two longer sides of the triangle are three times as long as the shortest side. What are the lengths of all three sides of the triangle?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +s+ = the length of the shortest side in cm
The lengths of the sides are:
+s+, +3s+, and +3s+, all in cm
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+s+%2B+3s+%2B+3s+=+42+
+7s+=+42+
+s+=+6+
and
+3s+=+18+
The sides are 6, 18, 18, all cm
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check:
+6+%2B+18+%2B+18+=+42+
+42+=+42+
OK