Answer:
X=46 ft.
Step-by-step explanation:
Write an equation to solve the problem.
Since one side is 3 ft, don’t forget that there is another side of the rectangle that is also 3 ft. We can add this part to the equation as 2(3).
Now, let’s see the other side. It’s (2+x) ft. As mentioned before, there are another side, so, you guessed it: 2(2+x).
We have our equation:
2(3)+2(2+x) = 102 ft.
Simplify first:
6+4+2x = 102 ft.
10+2x=102 ft.
2x=92 ft.
x=46 ft.
