l=40miw=40mi
The perimeter of a rectangle is equal to the sum of all sides of the rectangle.
length+length+width+width=2⋅(length)+2⋅(width)
Substitute the values of the length l=40 and width w=40 into the formula for the perimeter of a rectangle.
2⋅40+2⋅40
Multiply 2 by 40.
80+2⋅40
Multiply 2 by 40.
80+80
80+80
Add 80 and 80.
160 mi
Find the Perimeter rectangle (40mi)(40mi)
