The first side of a triangle of 8 in shorter than the second side. The third side is 4 times as long as the first side. The perimeter is 26 in. Find the length of the longest side?
1 Answer
Dec 8, 2017
The longest side is 12 inches long.
Explanation:
Let
Since
The third side is 4 times the length of the first side, so the third side is
Perimeter is the sum of the sides, so:
We also know the perimeter is 26, so we have:
subtract 8:
divide:
The three sides have length: 3, 11, and 12.
The longest side is 12 inches long.