Question 1071441
.
<pre>

    x + y + x = 28,
    y = 2x.

    ---->  4y = 28  --->  y = {{{28/4}}} ft = 7 ft.

    ---->  x = 2*7 = 14 ft.

    The area = 7*14 ft^2 = 98 ft^2.
</pre>