there is a playground shaped like a rectangle 40 feet wide and 80 feet long.what is the perimeter of the yard?

walk around the rectangle and "count" (add up) the number of feet.

Length+length+width+width=perimeter

40+40=80
80+80=160
160+80=240 feet

To find the perimeter of a rectangle, you need to add up all four sides. In this case, you have a rectangle with a width of 40 feet and a length of 80 feet.

The formula to find the perimeter of a rectangle is P = 2(W + L), where P represents the perimeter, W represents the width, and L represents the length.

Substituting the values into the formula, we get:
P = 2(40 + 80)
P = 2(120)
P = 240

Therefore, the perimeter of the yard is 240 feet.