SOLUTION: In an isosceles, each of the congruent sides is equal to the two-third of the base. If the perimeter is 42 cm, find the dimensions of the triangle.

Algebra ->  Triangles -> SOLUTION: In an isosceles, each of the congruent sides is equal to the two-third of the base. If the perimeter is 42 cm, find the dimensions of the triangle.       Log On


   

Question 886172: In an isosceles, each of the congruent sides is equal to the two-third of the base. If the perimeter is 42 cm, find the dimensions of the triangle.
Answer by basketball1127(19) About Me  (Show Source):
You can put this solution on YOUR website!
Let 3x = length of the base
So the length of each leg is (2/3)(3x)=2x
perimeter= 2x+2x+3x = 42 cm
7x = 42 cm
x = 6 cm
base = 3x = 3(6cm) = 18 cm
leg = 2x = 2(6cm) = 12 cm