Calculating Total Area with Walkway

A rectangular garden wall is to be built in a backyard with a length of 8 meters and a width of 5 meters. The owner wishes to plant flowers around the garden wall, leaving a walkway of 1 meter width around it. To determine the total area available for planting, calculate the area of the entire rectangular shape including the walkway.

To find the total area of the space including the walkway, calculate the dimensions including the width of the walkway added to each side. Which of the following options represents the total area available for planting flowers?