The distance around Mia,s garden is 78 meters,
The distance around Mia,s garden is the perimeter of the garden.
The perimeter can be defined as the continuous line forming the boundary of a geometrical figure, in this case a rectangle.
To calculate the perimeter of a rectangle you have to add the lenght of the four sides. This question gives us long and wide, and knowing that on a rectangle two sides are each equal to the long and the other two sides are equal to the width, you calculate the perimeter as follows: