In an isosceles triangle, two sides are three times the length of the third side. Find the length of the SHORTEST side if the perimeter is 28 feet.
A) 7 feet
B) 6 feet
C) 4 feet
D) 3 feet

Question

Quizplus · Accepted Answer

Let x be the length of the shortest side. Then the two longer sides are each 3x. The perimeter is the sum of all three sides, so we have:

x + 3x + 3x = 28
7x = 28
x = 4

Therefore, the shortest side is 4 feet long. Choice C is the only option with the correct length of 4 feet.

In an Isosceles Triangle, Two Sides Are Three Times the Length