A lawn 20m by 15m is surrounded by a path 2m wide. Area of the path is
300 m2
756 m2
156 m2
456 m2
Area of the lawn = 20 x 15 = 300 m2
Area of the lawn & path = 24 x 19 = 456 m2
area of the path = 456-300
= 156 m2