Answer
Length = 40 yd.
Work Step by Step
The formula for the perimeter is P=2L +2W.
L represents the length and W represents the width.
Plug your known values into this equation. We know that the perimeter is 120 and the length is 20. Therefore, we can rewrite this equation as:
120=2(20) +2L
Simplify the right side of this equation by multiplying 2 and 20 together to get:
120=40+2L
Next, subtract 40 from both sides to get:
80=2L
After that, simply divide L by 2 to get rid of the coefficient, giving us:
L=40 yd.
