A 9-meter by 11-meter rectangular garden has a one-meter wide walking path all around it (outside the garden). What is the area of the walking path?

45 sq meters

Width - 9 meters
Width with path - 11 meters ( 1 meter each side)

Length - 11 meters
Length with path - 13 meter

Area without path - 9 * 11 = 99
Area with path - 13 * 11 = 144

Subtract area without from area with

144 - 99 = 45 sq meters

The answer to your question is the last one