SOLUTION: an isosceles triangle has two sides of equal length. the length os the third side is 4 ft less than twice the length of an equal side.
Find the length of the third side when the
Algebra ->
Angles
-> SOLUTION: an isosceles triangle has two sides of equal length. the length os the third side is 4 ft less than twice the length of an equal side.
Find the length of the third side when the
Log On
Question 208740: an isosceles triangle has two sides of equal length. the length os the third side is 4 ft less than twice the length of an equal side.
Find the length of the third side when the perimeter is 20 ft. Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! x+x+(2x-4)=20
2x+2x-4=20
4x=20+4
4x=24
x=24/4
x=6 ft. is the length of the equal sides.
2*6-4=12-4=8 ft. is the length of the third side.
Proof:
6+6+8=20
20=20
(