Answer:
40 ft
Step-by-step explanation:
Let us break this figure up into two figures.
The regular rectangle, and the protruding rectangle on the top.
The regular rectangle:
Perimeter = 2 (length+breadth) = 2 (6+10) = 2 (16) = 32 ft
The protruding rectangle:
The breadth is given as 3. The length is (10-6=) 4 ft
Perimeter = 2 (length+breadth) = 2 (3+4) = 2 (7) = 14 ft
Note that IT IS NOT THE SUM OF THESE TWO PERIMETERS.
One side of the smaller rectangle, and 3 ft of the bigger rectangle isn't there.
(32-3) + (14-3) = 29+11 = 40 ft
