Answer:
88 ft
Explanation:
Given,
The measurement of the garden = 16-ft-by-20-ft,
That is, length of garden = 16 ft,
Width of garden = 20 ft,
If plot is obtained after surrounding the garden by 2 ft wide wall,
So, length of plot = 16 + 4 = 20 ft,
Width of plot = 20 + 4 = 24 ft,
So, the perimeter of the entire plot = 2 ( length + width )
= 2 ( 20 + 24 )
= 88 ft