SOLUTION: If the three sides of a triangle are in ratio of 3:5:7 and the perimeter of the triangle is 12 cm, what is the length of the longest side?
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Question 925716: If the three sides of a triangle are in ratio of 3:5:7 and the perimeter of the triangle is 12 cm, what is the length of the longest side?
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Assume the sides are 3x, 5x, 7x
3x+5x+7x = 12
15x = 12
x = 12/15 = 4/5
Longest side = 7x = 28/5 cm
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