Question

find the perimeter. _ ft 5ft 4ft 1ft 2ft 3ft

Explanation:

Step1: Calculate the length of the top side

The top side length is \(2 + 4+3=9\) ft.

Step2: Calculate the perimeter of the rectangle - like shape (without considering the indent)

The formula for the perimeter of a rectangle is \(P = 2\times(\text{length}+\text{width})\). Here, if it were a complete rectangle with length \(l = 9\) ft and width \(w = 5\) ft, the perimeter (excluding the two sides of the indent) would be \(2\times(9 + 5)=28\) ft.

Step3: Add the two vertical sides of the indent

The two vertical sides of the indent each have a length of \(1\) ft. So we add \(1+1 = 2\) ft to the previous result.

Answer:

\(28+2=30\)