The length of a rectangle is 9 m which is equal to the area of a rectangle if its perimeter is 26 m.

The perimeter of a rectangle is the sum of the lengths of all its sides.

Let the width of the rectangle be x m.

Let’s compose and solve the equation:

9 + 9 + x + x = 26,

2x = 8,

x = 4 m.

Let’s calculate the area of the rectangle, for this we multiply its length by its width:

9 * 4 = 36 m2.

Answer: the area of the rectangle is 36 m2.