Answer
56.54 ft
Work Step by Step
Given the diameter of the circumference of the carpet = 18 ft
To find What length (in feet) of a metal protective strip is
needed to bind the circumference of the carpet
As we know that d = 2r
18 ft = 2r
r = $\frac{18}{2}$ = 9 ft
We know the circumference of the carpet with radius 9 ft is given by the formula
c= 2$\pi$ r = 2$\pi$ * 9 = 18$\pi$ ft = 56.54 ft
