Question

A triangle has sides represented by 7, x, and x−1. If the perimeter is 28, find the length of the longest side.

Answer 1

x (11 unit) is the longest side

Explanation:

Given:

Sides;

7, x, and x−1

Perimeter = 28

Find:

Longest side

Computation:

Perimeter = sum of all sides

So,

7 + x + (x -1) = 28

2x + 6 = 28

x = 11

So,

x -1 = 11 - 1 = 10 unit

x (11 unit) is the longest side