Answer:
The perimeter of the resulting rectangle is \(252\ ft\)
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its perimeters is equal to the scale factor
Let
z-----> the scale factor
x------> the perimeter of the dilated rectangle
y-----> the perimeter of the original rectangle
so
\(z=\frac{x}{y}\)
In this problem we have
\(z=3.5\)
\(y=72\ ft\)
substitute and solve for x
\(3.5=\frac{x}{72}\)
\(x=3.5*72=252\ ft\)
