Question

1. leslie built a walkway around a rectangular garden as shown. the walkway is the same width on all sides of the garden. what is the perimeter of this garden? 20 ft 30 ft 3 ft

Explanation:

Step1: Find the length of the outer - rectangle

The length of the inner - rectangle is 30 ft. Since the walkway is 3 ft wide on each side, the length of the outer - rectangle $l=30 + 3+3=36$ ft.

Step2: Find the width of the outer - rectangle

The width of the inner - rectangle is 20 ft. Since the walkway is 3 ft wide on each side, the width of the outer - rectangle $w = 20+3 + 3=26$ ft.

Step3: Calculate the perimeter of the outer - rectangle

The formula for the perimeter of a rectangle is $P = 2(l + w)$. Substitute $l = 36$ ft and $w = 26$ ft into the formula: $P=2(36 + 26)=2\times62 = 124$ ft.

Answer:

124 ft