SOLUTION: An isosceles triangle has two sides of equal length. The length of the third side is 2ft less than twice the length of an equal side. Find the length of the thirs side when the per

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Question 415921: An isosceles triangle has two sides of equal length. The length of the third side is 2ft less than twice the length of an equal side. Find the length of the thirs side when the perimeter is 42ft.
Answer by Gogonati(855) About Me  (Show Source):
You can put this solution on YOUR website!
Solution: x is the length a equal side; 2x-2 is the length of the base. Since the
perimeter is 42 write: x+x+2x-2=42; 4x=44; x=11. The equal sides are 11ft each and the base is; 2(11)-2=20ft.