SOLUTION: Each of the legs of an isosceles triangle is 6 ft shorter than the base. The perimeter of the triangle is 84ft. Find the length of the base.

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Question 941557: Each of the legs of an isosceles triangle is 6 ft shorter than the base. The perimeter of the triangle is 84ft. Find the length of the base.
Answer by srinivas.g(540) About Me  (Show Source):
You can put this solution on YOUR website!
let x be the length of base
length of other two sides = x-6
perimeter ( sum of all 3 sides)= 84 ft
x+x-6+x-6 = 84
3x-12 = 84
move -12 to the right
3x=84+12
3x=96
divide with 3 on both sides
+3x%2F3+=96%2F3
x=32
Length of base = 32 feet